Thermal convection of fluid‐saturated granular medium in acoustic field,International Journal for Numerical Methods in Fluids

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Thermal convection of fluid‐saturated granular medium in acoustic field
International Journal for Numerical Methods in Fluids ( IF 1.7 ) Pub Date : 2020-06-25 , DOI: 10.1002/fld.4885
Konstantin E. Sorokin ₁ , Yuri V. Perepechko ₁

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This article presents the results of numerical analysis of acoustic impact generated by small finite source on heat and mass transfer of fluid‐saturated granular medium in a cavity heated from below. Thermodynamically consistent model of two‐phase medium is obtained by the method of conservation laws suggesting no equilibrium in pressure between the phases. The transition from diffusive to convective regime of heat and mass transfer in fluid‐saturated granular medium as a consequence of acoustic impact is shown. Effect of source frequency and initial flow pattern on the intensity of convective instability and configuration of dissipative structure is studied. Formation of stable and symmetric convective structure by choosing the source frequency is illustrated.

中文翻译：

流体饱和颗粒介质在声场中的热对流

本文介绍了由小型有限源对从下方加热的空腔中的流体饱和颗粒介质的传热和传质的声学影响的数值分析结果。通过守恒定律的方法得出两相介质的热力学一致模型，该规律表明两相之间的压力没有平衡。示出了由于声冲击的结果，在流体饱和的颗粒介质中从扩散和对流传热和传质的过渡。研究了源频率和初始流型对对流不稳定性强度和耗散结构的影响。说明了通过选择源频率来形成稳定且对称的对流结构。

更新日期：2020-06-25

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