Cone Angle Research Articles

Evaluation on the structure and mechanical property of crimped woven vascular graft with continuous variable cross-sections

To improve the clinical performance of textile vascular graft, a crimping treatment was applied on the prepared woven vascular graft prototypes with continuous variable cross-sections (CVCW vascular graft), then the structure and mechanical properties of crimped CVCW vascular graft woven samples with different fabric weaves and conical angles were evaluated. The results indicated that the corrugation wall structure of the crimped CVCW vascular graft was still uniform after the crimping treatment, while both their average pore size and the water permeability decreased. On the other hand, the stress-strain behavior of the crimped woven CVCW vascular grafts obeyed the BoxLucas equation. Further, all of the radial compression strength (>15cN), the bursting strength (>15Mpa) and the radial compliance (0.85%) of the crimped CVCW vascular grafts were greatly improved, but the elastic recovery was reduced in comparison with the round straight tubular graft. Generally, this work demonstrated the good performance of the crimped CVCW vascular grafts for future clinical practice, as well as the feasibility of the crimping treatment techniques in improving the biomimetic design of woven CVCW vascular graft.

Self-deployable contracting-cord metamaterials with tunable mechanical properties.

Recent advances in active materials and fabrication techniques have enabled the production of cyclically self-deployable metamaterials with an expanded functionality space. However, designing metamaterials that possess continuously tunable mechanical properties after self-deployment remains a challenge, notwithstanding its importance. Inspired by push puppets, we introduce an efficient design strategy to create reversibly self-deployable metamaterials with continuously tunable post-deployment stiffness and damping. Our metamaterial comprises contracting actuators threaded through beads with matching conical concavo-convex interfaces in networked chains. The slack network conforms to arbitrary shapes, but when actuated, it self-assembles into a preprogrammed configuration with beads gathered together. Further contraction of the actuators can dynamically tune the assembly's mechanical properties through the beads' particle jamming, while maintaining the overall structure with minimal change. We show that, after deployment, such metamaterials exhibit pronounced tunability in bending-dominated configurations: they can become more than 35 times stiffer and change their damping capability by over 50%. Through systematic analysis, we find that the beads' conical angle can introduce geometric nonlinearity, which has a major effect on the self-deployability and tunability of the metamaterial. Our work provides routes towards reversibly self-deployable, lightweight, and tunable metamaterials, with potential applications in soft robotics, reconfigurable architectures, and space engineering.

%VBur index and steric maps: from predictive catalysis to machine learning.

Steric indices are parameters used in chemistry to describe the spatial arrangement of atoms or groups of atoms in molecules. They are important in determining the reactivity, stability, and physical properties of chemical compounds. One commonly used steric index is the steric hindrance, which refers to the obstruction or hindrance of movement in a molecule caused by bulky substituents or functional groups. Steric hindrance can affect the reactivity of a molecule by altering the accessibility of its reactive sites and influencing the geometry of its transition states. Notably, the Tolman cone angle and %VBur are prominent among these indices. Actually, steric effects can also be described using the concept of steric bulk, which refers to the space occupied by a molecule or functional group. Steric bulk can affect the solubility, melting point, boiling point, and viscosity of a substance. Even though electronic indices are more widely used, they have certain drawbacks that might shift preferences towards others. They present a higher computational cost, and often, the weight of electronics in correlation with chemical properties, e.g. binding energies, falls short in comparison to %VBur. However, it is worth noting that this may be because the steric index inherently captures part of the electronic content. Overall, steric indices play an important role in understanding the behaviour of chemical compounds and can be used to predict their reactivity, stability, and physical properties. Predictive chemistry is an approach to chemical research that uses computational methods to anticipate the properties and behaviour of these compounds and reactions, facilitating the design of new compounds and reactivities. Within this domain, predictive catalysis specifically targets the prediction of the performance and behaviour of catalysts. Ultimately, the goal is to identify new catalysts with optimal properties, leading to chemical processes that are both more efficient and sustainable. In this framework, %VBur can be a key metric for deepening our understanding of catalysis, emphasizing predictive catalysis and sustainability. Those latter concepts are needed to direct our efforts toward identifying the optimal catalyst for any reaction, minimizing waste, and reducing experimental efforts while maximizing the efficacy of the computational methods.

Numerical simulation of mixing effect of compressed air–foam gas–liquid mixer

This article investigated the effect of geometric structural parameters on flow patterns and pressure drops and gas–liquid mixing effects of gas–liquid mixing devices. The computational fluid dynamics software FLUENT was used to calculate the airflow inside the mixer of a compressed air–foam gas–liquid mixing device with different cone angles, foam flow rates, air inlet inclination angles, and pipeline diameters. The results obtained are the pressure distribution, the liquid volume fraction, and the liquid phase streamlines in the mixing device. The numerical simulation results showed that for a gas–liquid mixing device, the optimal inlet inclination angle was 60°–70°, and the mixing effect of an equal diameter mixer was better than that of a variable diameter mixer, but it would reduce the mixing efficiency of the air and foam. The optimal pipeline diameter of the conveying pipeline was 190 mm, and the optimal cone angle of the mixing device was 55°.

Low-density plasmas generated by electron beams passing through silicon nitride window

In general, more attention is paid to how to improve the characteristic parameters of plasma in plasma applications. However, in some cases, it is necessary to produce plasma with low-electron density, such as in the laboratory simulation of ionospheric plasma in space science. In this study, a low-density plasma is generated by electron beams passing through a silicon nitride transmission window under low pressure condition. The transmission properties of electron beam passing through silicon nitride films are investigated by Monte Carlo simulation, and the plasma feature is studied by a planar Langmuir probe and a digital camera. It is found that the plasma exhibits a conical structure with its apex located at the transmission window. At a constant pressure, the cone angle of conical plasma decreases with the electron energy increasing. This is qualitatively consistent with the Monte Carlo simulation result. The frequency of electron-neutral collisions increases as the working pressure rising, which leads the plasma cone angle to increase. When the beam current is reduced from 10 μA to 0.5 μA at 40 keV, the electron density decreases, in a range between 10<sup>5</sup> and 10<sup>6</sup> cm<sup>–3</sup>, while the electron temperature does not change significantly but approaches 1 eV. It can be inferred that the electron density decreases with the distance <i>z</i> from the transmission window in the incident direction of the electron beam. A low-density plasma of less than 10<sup>5</sup> cm<sup>–3</sup> can be obtained further away from the transmission window.

EXPERIMENTAL STUDY OF THE SPRAY PATTERN AND MERGER PROCESS OF DUAL-LAYER, ROTATING CONICAL LIQUID SHEETS

To obtain a comprehensive understanding of the primary breakup mechanism of dual-layer, rotating conical liquid sheets, the spray field of a dual-orifice, pressure-swirl atomizer is observed using high-speed shadowgraphy. The influences of the pressure drop in the primary and pilot flow channels and of the merger of the dual-layer liquid sheet on spray morphology, spray cone angle, and liquid sheet surface fluctuations are investigated on the basis of an analysis of spray field images. Attention is focused on the mechanisms underlying the behavior of the disturbance waves generated during the merger of the dual-layer liquid sheet. The results of this study reveal that the pressure drops in the primary and pilot flow channels affect the spray pattern, spray cone angle, and liquid sheet surface fluctuations. It is found that the influence of the pressure drop in the primary channel is dominant, and the changes in the liquid sheet surface fluctuations are related to the spray pattern. During liquid sheet merger (after the inner sheet has reached the expected spray cone angle), the spray cone angle of the outer sheet decreases, and only after the sheets are in contact with each other does the amplitude of the surface fluctuations become significantly larger and generate more medium- and high-frequency disturbance waves.

Разрывное конически симметричное течение идеальной несжимаемой жидкости

The Euler equations are considered in spherical coordinates to describe the steady flow of an ideal incompressible fluid. An exact conically symmetric solution based on the source/sink and strong conic discontinuity with an apex in zero of the coordinate system is obtained. The northern region of the flow is situated in the finite vicinity of the symmetry axis, i.e., within a discontinuity cone, where the solution is regular and vortex-free. On the other side of the discontinuity, the flow adjoins the permeable equator plane. In this region, the flow is vortex-like, and its properties are determined by a density jump. The fluid flowing through the discontinuity is governed by the increase of entropy principle. The thermal field corresponding to the flow is presented. It shows that the spatial heterogeneity of temperature results from the interaction between the azimuth vorticity component and the meridional velocity component. A strong discontinuity cone angle is revealed to be a significant parameter of the problem. A comparative analysis of the source and sink properties is performed. The considered flows qualitatively differ in terms of pressure and velocity behavior.

Clogging and Unclogging of Fine Particles in Porous Media: Micromechanical Insights From an Analog Pore System

AbstractPore clogging and unclogging in porous media are ubiquitous in subsurface hydrologic processes, which have been studied extensively at various scales ranging from a single pore to porous‐medium samples. However, it remains unclear how fluid flow, particle rearrangement, and the arching effect typical of cone‐shaped pore geometry interact and how they are captured by a pressure drop model at the macroscopic scale. Here, we investigate the pore‐scale feedback mechanisms between fluid flow and pore clogging and unclogging using a fully resolved fluid‐particle coupling approach (lattice Boltzmann method‐discrete element method). We first propose to use a truncated‐cone pore to represent realistic pore geometries revealed by X‐ray images of prepared sand packing. Then, our simulations indicate that the pore cone angle significantly influences the pressure drop associated with the clogging process by enhancing particle contacts due to arching. A modified Ergun equation is developed to consider this geometric effect. At the microscale, clogging can be explained by the interparticle force statistics; a few particles in an arch (or a dome) take the majority of hydrodynamic pressure. The maximum interparticle force is positively proportional to the particle Reynolds number and negatively associated with the tangent of the pore cone angle. Finally, a formula is established utilizing fluid characteristics and pore cone angle to compute the maximal interparticle force. Our findings, especially a modified pressure drop model that accounts for pore geometry resistance, provide guidance for applying pore‐scale models of clogging and unclogging to large‐scale subsurface fines transportation issues, including seepage‐induced landslides, stream bank failure, and groundwater recharge.

EXPERIMENTAL STUDY ON FLASH BOILING SPRAY OF HIGH-PRESSURE LIQUID AMMONIA JET WITH ROUND AND ELLIPTICAL HOLE NOZZLES

Ammonia is an ideal alternative fuel for mitigating carbon emissions. High-pressure direct injection of liquid ammonia (LNH<sub>3</sub>) offers significant advantages in enhancing energy efficiency and minimizing emissions. Due to the high saturation vapor pressure, the injection of LNH<sub>3</sub> is susceptible to flash boiling. In this study, we used high-speed micro-imaging technology with backlight lighting to establish a high-pressure common-rail LNH<sub>3</sub> jet experimental platform and investigate the flash boiling spray characteristics of nozzles with round and elliptical holes. The results demonstrated that under non-flash boiling conditions, the residual LNH<sub>3</sub> in the sac chamber and nozzle can rapidly corrode the acrylic material of the nozzle, leading to deformation and failure of the nozzle structure. Under flash boiling conditions, LNH<sub>3</sub> ejected from the hole will produce spherical macroscopic spray morphology. Then, the spray gradually transitions from an elliptical profile to a conical profile as the back pressure increases. Compared to nozzles with round holes, nozzles with elliptical holes exhibit higher flow velocity, which enhances oil-gas mixing and promotes more pronounced flash boiling phenomena. Flash boiling occurs at an earlier stage with an increase in the spray cone angle, thereby improving the atomization characteristics under both flash and non-flash boiling conditions. The tail jet of nozzles with elliptical holes terminates earlier while exhibiting a higher decrease rate in the average gray value, which improves the atomization quality in the tail spray stage and meets the requirements of timing, quantification, and precise control of the fuel injection system.

INVESTIGATION OF RP-3 SPRAY CHARACTERISTICS BASED ON SENSITIVITY ANALYSIS AND ACTIVE SUBSPACE CONSTRUCTION

To explore the in-cylinder fuel injection and the subsequent spray dynamics of aviation fuel RP-3, the RP-3 spray macroscopic characteristics of single-hole injectors with different nozzle diameter under varied ambient pressures and injection pressures are investigated via diffuser back-illumination imaging (DBI) experimental method. The critical factors of the variability in spray characteristics response are pointed out by setting up a one-dimensional active subspace in this study, to perform synergistic effects via multivariable sensitivity analysis. It is revealed that compared with diesel, RP-3 spray edge shows more vortex structures, which is more susceptible to gas entrainment, especially for injector with larger nozzle diameter. Increasing injection pressure and ambient pressure will lead reduced vortex structures instead. Moreover, on the whole, RP-3 produces shorter spray penetration distances, larger spray cone angle, lower spray irregularity, and smaller spray areas than diesel under same conditions. Based on multivariable sensitivity analysis, it is indicated that accordant with diesel fuel, injection pressure (P<sub>in</sub>) and ambient pressure (P<sub>b</sub>) are the controlling parameters for RP-3 spray penetration distance, and P<sub>b</sub> is dominant on RP-3 spray cone angle. However, caused by cavitation intensity, RP-3 spray cone angle is more sensitive to nozzle diameter (φ) and cavitation number (Ca). Moreover, P<sub>b</sub> dominates over the sensitivity of spray irregularity and spray area is mainly controlled by P<sub>in</sub> .

Cohesion and polarization of active agent with visual perception

The collective motion and compact spatial organization of active agents have attracted attention due to their widespread occurrence in active matter systems as well as their valuable applications in unmanned aerial vehicles (UAVs). In our work, a Vicsek-like model with a spatial perception cone is designed to implement spatial compaction and orientational synchronization. It is observed that the co-existent condensations in both coordinate and momentum spaces can occur within a limited range of the perception cone angle. The degrees of condensations are significantly stronger than those of previous models. Furthermore, two mechanisms are declared to explain the condensations. The results may offer some clues to help design robotic systems or UAVs with directed collective behavior.

How does the blue ring form in a blue whirl: An experimental study

This paper presents an experimental study on the flame and flow structures of the blue whirl, in pursuit of an understanding of the blue ring's formation. The flame front was identified based on the OH* chemiluminescence signal and the flow field was obtained using high-frequency particle image velocimetry (PIV). The flame and flow field reveals the presence of a radial-inward boundary layer and the corner flow lifting the blue whirl. In the case of turbulent blue whirl, a discernible recirculation zone manifests within the flame, which offers direct evidence supporting the dominance of the vortex breakdown in blue whirl's formation. Furthermore, we find that the blue whirl's cone angle approximately equals the angle of the zero-vorticity line of the flow field, whereas the height of the blue ring aligns with the height of the upward deflection point on the radial-stagnation line. These findings demonstrate a strong coupling between the flame structures and the flow field. To understand the formation mechanism of the blue ring, the flow flux across the radial-stagnation line is calculated to estimate the equivalence ratio of the mixture forming the blue ring. It reveals that the blue ring is formed where the stoichiometric reaction occurs. This happens as the corner flow induces a strong shear to facilitate the mixing within the air-fuel mixture, causing the inner layer of the mixture to be diluted to the equivalence ratio of approximately 1 at the blue ring's location.

Study on cone angle of shockwave front in liquid composite protective structure

Study on cone angle of shockwave front in liquid composite protective structure

Performance Evaluation of Centrifugal Pump-As-Turbine For Micro Hydro Applications

The Philippines is entirely dependent on imported hydropower (HP) system parts, specifically the turbine and generator. The use of a centrifugal pump as a turbine is a good option for the HP system due to its low cost and wide availability in the market. The performance of the centrifugal pump-as-turbine was evaluated under the following conditions: (1) different head setting, (2) different configurations of the draft tube, and (3) a match with an AC generator. A 75x75mm end suction, non-self-priming centrifugal pump was used in this study. The head settings used were 0.28 kg/cm2 to 0.84 kg/cm2 (pressure gauge reading). A prony brake dynamometer was fabricated to measure the torque at the shaft of the pump-as-turbine. The configurations of the draft tube used include: (a) conical angles - 0°, 4°, and 6°, and (b) draft tube lengths – 0.4572 m, 0.9144 m, and 1.3716 m. A 900W AC generator was matched with the pump–as–turbine and tested at different pressure and load settings. Results showed that the centrifugal pump could operate in turbine mode without any mechanical modifications. The highest mechanical efficiency obtained was 83.60% and was attained at a pressure setting of 0.70 kg/cm2. The highest shaft power of 1.02 kW that was attained at 0.84 kg/cm2 pressure setting. Based on the results, in terms of shaft power, the best draft tube configuration has a conical angle of 4° and a length of 1.3716 m. Meanwhile, in terms of efficiency, the best draft tube configuration is 4° conical angle and 0.4572 m length. The generator speed of 4000 rpm was obtained at a pressure setting of 0.84 kg/cm2. On the other hand, a generator speed of 3800 rpm was obtained at a pressure setting of 0.63 kg/cm2. It could be observed that the maximum power (515 W) obtained during the actual run was way below the expected output (847 W). The system efficiencies as well as the electrical power output could improve if the belt slippage is reduced. It is recommended to conduct more testing to be able to determine the full potential of the pump-as-turbine.

Wind Turbine Geometrical and Operation Variables Reconstruction from Blade Acceleration Measurements

To develop reliable numerical models and better interpret monitoring campaigns experimental data of wind turbines, knowing the structure operation conditions, in particular the rotor angular velocity and blades’ pitch angle, is of paramount importance, but often not known due to confidentiality restrictions, or known with low time resolution (typically 10 min average values). In this work, it is shown analytically that blades accelerations measurements contain valuable information that allow for a better characterisation of the effective rotor shaft tilt and blades cone angle for different operating conditions. It is also shown that these measurements can be used to reconstruct the time history of the rotor angular velocity and blades’ pitch angle. After presented in an analytical framework, the methodology is validated with experimental data of two full scale wind turbines. The successful reconstruction of the rotor operating conditions shows that the method presented can be used to provide further insight into the dynamics of the structure that aids monitoring data analysis and provides an alternative method to monitor the SCADA systems themselves. The paper combines quite unique experimental data collected at two operating rotors with original data processing strategies that provide very valuable information to researchers and wind turbine operators.

Multi-Objective Optimization of a Long-Stroke Moving-Iron Proportional Solenoid Actuator.

In this study, the performance of a long-stroke moving-iron proportional solenoid actuator (MPSA) was improved by combining numerical simulations and experiments. A finite element model of the MPSA was developed; its maximum and mean relative absolute errors of electromagnetic force were 4.3% and 2.3%, respectively, under typical work conditions. Seven design parameters including the cone angle, cone length, depth of the inner hole of the coil skeleton, cone width of the armature, inner cone diameter, and initial position of the moving-iron core were selected for developing the model, and the coefficient of the variation in electromagnetic force, nominal acceleration, 95% of the maximum stable output electromagnetic force, and corresponding response time were used as the performance indicators. The constraint relation between each performance indicator and the influence of each design parameter on the performance indicators were revealed using the uniform Latin hypercube experiment design, correlation analysis, and the main effect analysis method. A multi-objective optimization mathematical model of the MPSA was developed by combining traditional surrogate and machine learning models. The Pareto solution set was obtained using the nondominated sorting genetic algorithm II (NSGA-II), and three decision schemes with different attitudes were determined using the Hurwicz multi-criteria decision-making method. The results showed that a strong contradiction exists among the 95% of the maximum stable output electromagnetic force and its corresponding response time and the coefficient of the variation in electromagnetic force. The cone angle considerably influenced the performance indicators. Compared with the initial design, the coefficient of the variation in electromagnetic force was reduced by 54.08% for the positive decision, the corresponding response time was shortened by 15.65% for the critical decision, and the corresponding acceleration was enhanced by 10.32% for the passive decision. Thus, the overall performance of the long-stroke MPSA effectively improved.

Influence of Internal Bond Rotation on Ultrafast IR Anisotropy Measurements and the Internal Rotational Potential.

Measurement of molecular orientation relaxation using ultrafast infrared (IR) pump-probe experiments is widely used to understand the properties of liquids and other systems. In the simplest situation, the anisotropy decay is a single exponential reflecting diffusive orientational relaxation. However, the anisotropy decay is frequently biexponential. The faster component is caused by solvent caging restricting angular sampling until constraint release permits all angles to be sampled. Here, we describe another mechanism that limits the range of sampling, i.e., sampling of a restricted range of angles via internal bond reorientation on a rotational potential surface with barriers. If the internal angular sampling occurs faster than the entire molecule's diffusive orientational relaxation, it will produce a fast component of anisotropy decay with a cone angle determined by the shape of the internal rotation potential. We studied four molecules to illustrate the effects of internal bond rotations on anisotropy decay. The molecules are p-chlorobenzonitrile, phenylselenocyanate, phenylthiocyanate, and 2-nitrophenylselenocyante in the solvent N,N-dimethylformamide. The CN stretch is used as the IR chromophore. p-Chlorobenzonitrile does not have internal rotation; its anisotropy decays as a single exponential. The other three have bent geometries and internal rotation of the moieties containing the CN occurs; the anisotropies decay as biexponentials. The faster of the two decays can be understood in terms of motions on the rotational potential surface. A method is developed for extracting the intramolecular rotational potential surface by employing a modification of the harmonic cone model, and the results are compared to density functional theory calculations.

Study on spray characteristics of biodiesel alternative fuels for in-cylinder environment of diesel engine

This paper presents an experimental study of spray characterization of MD-NH (a blend of methyl decanoate and n-heptane in a molar ratio of 1:1 to characterize biodiesel) in an in-cylinder environment of diesel engines to provide a reference for the experimental study of engines in advanced combustion mode. Based on the Peng-Robinson state equation, the thermodynamic model of real fluid was established, and the influence law of ambient temperature and pressure on the diffusion characteristics of fuel flow was analyzed. Based on the constant volume combustion bomb experiments, the variations of spray penetration distance, spray cone angle, spray projection area, spray air entrainment mass, and spray fragmentation forms in different critical environment conditions were studied. The results show that the transport properties of the fuel change abruptly within the critical point neighborhood of the fuel. As the ambient temperature increases, near the critical temperature, the thermal conductivity of biodiesel decreases and then increases; density and kinematic viscosity decrease at an accelerated rate; and surface tension increases to a maximum and then disappears sharply. The diffusion coefficient decreases sharply when the ambient pressure reaches the critical pressure. The spray characteristics of biodiesel in sub/supercritical conditions were different. Compared with the subcritical environment, the biodiesel spray penetration distance decreases, the spray cone angle increases, the spray projection area decreases, and the air entrainment mass increases in the supercritical atmosphere, which induces a gas-liquid interface mixing layer and promotes the mixing of biodiesel with the atmosphere gas. The experimental data in this paper fill the gap in the study of biodiesel spray characteristics in supercritical environments and provide a basis for high-fidelity numerical simulation of the spray model.

Distribution function and atomization parameters of petroleum fuels sprays: An experimental and numerical study

Heavy fuels are difficult to spray. To investigate the burning of this fuel and create an appropriate combustion chamber, one must first understand the atomization process and spray properties of petroleum fuels. The Diesel spray behavior compared to Mazut fuel spray gives us an understanding of the atomization phenomenon of fuels. The most crucial fuel atomization characteristics include droplet diameter, spray angle, breakdown length, and droplet distribution. The shadowgraphy technique is used to capture images of fuel spray, which are then processed using image analysis software. The size and speed of the fuel spray droplets are predicted using the maximum entropy method. From a pressure difference of 15 bar onwards, the rate of mass flow remains almost constant. The fuels spray cone angle initially increases, and after the flow approaches full atomization, it reaches approximately a constant value. The breakup length and droplets diameter decrease with increasing fuel temperature and pressure, and with the full development of the flow, they tend to almost zero. By raising the fluid's viscosity, the diameter size distribution of the droplets becomes more uniform and smooth (unlike velocity distribution). In this research, an attempt has been made to develop experimental and numerical methods to measure the powdering parameters of a heavy non-Newtonian oil fuel called Mazut and a light petroleum fuel called diesel, as well as to investigate the spray behavior of these fuels.

INVESTIGATING THE SUITABILITY OF MULTI-SCROLL VOLUTES FOR IMPROVING SPANWISE INCIDENCE OF MIXED FLOW TURBINE ROTORS WITH VARYING BLADE CONE ANGLES IN AUTOMOTIVE TURBOCHARGING APPLICATIONS

Abstract A Mixed Flow Turbine (MFT) is not constrained to a radial inlet blade angle, providing additional design freedom. As the MFT leading edge varies in radius, the spanwise incidence angle varies, leading to additional separation on the blade suction surface (SS) near the hub because of increasingly positive incidence, most noticeable at off-design conditions. A multi-scroll volute was previously paired with a 45° blade cone angle (Λ) MFT which generated non-uniform spanwise flow that improved off-design efficiency at the cost of peak efficiency. The current study identified the range of blade cone angles that benefitted from a multi-scroll volute to reduce incidence at the hub region. A numerical investigation was conducted which determined the influence a multi-scroll volute can have on MFTs with different blade cone angles. When the MFT with large blade cone angle (Λ=60°) was paired with a multi-scroll volute, the efficiency improved by 2.2%pts at design and 0.5%pts at off-design conditions. The incidence improved and mass flow rate increased at the hub region. The MFT with smaller blade cone angle (Λ=30°) had an efficiency loss of 1.3%pts at design and 0.8%pts at off-design conditions when paired with a multi-scroll volute due to increased incidence within the hub region. The multi-scroll volute concept was shown to offer efficiency improvements for MFTs with larger blade cone angles through better management of the non-uniform spanwise velocity distribution at rotor inlet.