Changing the container closure system of lyophilized products: Real or perceived risk to process efficiency and product quality?

Flow and heat transfer characteristics in the preparation of slush nitrogen by ejector-based atomization cooling

Investigation on the pyrolysis and heat transfer characteristics during the burn-through and double-sided flame spread of log planks

Experimental study of the aspect ratio effect of a rectangular impinging synthetic jet on flow and heat transfer characteristics

Enhancing heat transfer performance in heated corrugated channels has become a main focus of investigation because of its crucial role in an extensive range of thermal systems. In the current study, a numerical investigation is carried out to examine the influence of laminar pulsating flow and SWCNT-water nanofluids on the flow behavior and heat transfer characteristics in a heat channel with nonequilateral triangle corrugations. Two different approaches are applied for nanoparticles motion such as homogenous single-phase model (HPM) and two-phase Eulerian–Lagrangian model (ELM). Governing equations are solved using the finite volume method. The computational fluid dynamics (CFD) simulations include Reynolds number, pulsation frequency and amplitude, volume concentration of SWCNT nanoparticles within the range of 250≤ Re≤1250, 1 ≤ f ≤ 4, 0.5≤ A ≤ 1, 0% ≤φ≤ 4% respectively. According to results, it can be said that while increasing pulsation amplitude, A always yields higher mean Nusselt number, Numean and heat transfer enhancement ratio, η pulsating flow is more effective at lower pulsation frequencies, such as f=0.5 and Numean and η deteriorates with subsequent increment in f. For instance, at Re=500, the mean Nusselt number increases from Numean=13.519 to Numean=15.282 when the pulsation amplitude is changed from A=0.5 to A=0.75 at f=0.5. This corresponds to a 13.04% enhancement in Numean. But this proportion is only observed as 0.378% increment in Numean for the change in pulsation amplitude from A=0.5 to A=0.75 at Re=500 and f=2. Furthermore, it was observed that Numean increases when the nanofluid model is changed from HPM to ELM especially at higher φ. At the optimal condition (Re = 1250, f = 0.5, A = 1, φ = 4%), Numean augmented by approximately 88% with HPM and 91% with ELM compared to the steady flow case, f=0. The outcomes provide design insights for compact heat exchangers in applications such as microchannel coolers, automotive radiators, and electronic thermal management systems demonstrating that low pulsation frequencies and high pulsation amplitudes can remarkably improve heat transfer performance without changing exchanger dimensions.

A physics-informed neural network coupling framework for predicting heat and mass transfer characteristics of grains

Heat transfer and flow characteristics of microchannel heat sinks with bionic cycloid scale protrusion structures

Experimental investigation of heat transfer and friction characteristics of high-pressure helium with variable properties in circular tubes

Effect of ultrasonic vibration on the heat transfer and material removal characteristics in ultrasonic-assisted electrochemical discharge machining

Evolution characteristics of heat transfer in hazardous areas in goaf with hidden fire source

Numerical simulation research on the influence of inlet parameters and tube bundles spacing on heat transfer characteristics of multi-tube phase change water tank

Heat transfer characteristics of nonlinearly graded metal foam in thermal storage tank: A novel framework model of BP neural network fused with tactical unit algorithm

Study on convective and conductive heat transfer characteristics of porous-medium combustion based on lattice structures

Experimental and numerical study on flow and heat transfer characteristics of series parallel flow channel liquid cooling plate for energy storage lithium iron phosphate battery module

Convective heat transfer characteristics of liquid metal phase change slurry with addition of low-melting-point alloy microcapsules

Thermodynamic mechanism and heat transfer characteristics of CO2 hydrate for enhancing cold storage

Investigation on enhanced heat transfer characteristics of hybrid convective cooling-phase change material composite systems for battery thermal management

Experimental investigation of heat transfer characteristics of distilled water and ethanol in electrospray surface cooling

The flow and heat transfer characteristics of channel with adaptive rotating vortex generators

Flow boiling heat transfer characteristics of CO2/lubricant mixture across different flow patterns