摘要
从格子气自动机演化方程恢复了宏观热声方程,采用D2Q9热格子气模型模拟热声热机系统的压力场、温度场和速度场,获得压力驻波的传播和反射过程。模拟结果显示,在所给模拟条件下压力波具有非线性的特征,变截面附近的流场区域会产生引起非线性耗散的涡流。本文也分析了谐振管几何尺寸及格子气粒子密度对系统频率和压力的影响,验证了热声热机格子气模型的有效性。
The equation which was used to calculate the volumetric heat capacity of real gas was derived using BH perturbation theory.The volumetric heat capacities of real gases were calculated. Compared with reference values,the total average absolute deviation on saturated line was 1.10%and in superheated area was 1.46%,the maximal deviation was less than 6%for more 20 real gases.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第2期185-188,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50576024)
关键词
格子气
热声热机
声场
涡流
perturbation theory real gases heat capacity
