Abstract
For a pulsed laser transmitted in the raised dust from battlefield vehicle movement, the premise of obtaining its transmission properties and anti-jamming method is to acquire the spatial distribution rules of dust mass concentration. In this study, the emission mechanism for vehicle-raised dust in the battlefield environment is analyzed, as well as various influencing factors of the dust emission velocity. A finite volume method (FVM)-based model for simulating the spatial dispersion of dust raised by a certain moving tank is built, and the effects of mass flow rate, traveling speed, wind speed and wind direction on the spatial distribution of dust mass concentration are explored in the battlefield environment. The results show that the raised dust is plume-shaped within the computational domain, and the spatial mass concentration of plume is positively correlated with the mass flow rate. Besides, it is necessary to determine the impact of tank travelling speed on the spatial mass concentration of dust based on the relationship between the travelling speed and the dust mass flow rate. Although front wind reduces the spatial mass concentration of dust plumes, the reduction rate decelerates when the wind speed exceeds 4 m/s. Crosswind leads to the deflection and decreased mass concentration of dust plumes. Under varying wind directions, the variation of crosswind component exerts a more pronounced influence on the spatial mass concentration of dust than that of the front wind component. This study provides a technical support for the further study of near-ground laser weapon system against vehicle dust interference in the battle field.
Highlights
Short-range laser detectors, as an important military gear, are widely used in various types of missiles and platforms such as the air-to-air missiles, surface/ship-to-air missiles and anti-radiation missiles
When attacking military vehicles like tanks and wheeled armored vehicles in battlefield environments, the laser detectors equipped with ground-attack ammunition are prone to false alarms and early explosions
SIMULATION RESULTS AND DISCUSSIONS The spatial distribution results for mass concentration of dust from moving tank are derived under multiple influencing factors based on the Fluent software, which are categorized into scenarios with and without winds
Summary
Short-range laser detectors, as an important military gear, are widely used in various types of missiles and platforms such as the air-to-air missiles, surface/ship-to-air missiles and anti-radiation missiles. S. Yang et al.: Study of Spatial Distribution Characteristics for Dust Raised by Vehicles in Battlefield Environments and computational fluid dynamics (CFD) model. Through integration of CFD-based simulation with atomization experiment, Yu et al [14] analyzed the migration and distribution of cutting dust and multi-stage atomization field by airflow effect at the 2307 fully mechanized mining face of Tangkou Coal Mine They proposed a dust reduction measure consisting of multi-stage atomizing dedusting fans at the coal cutter exterior.
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