个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:北京航空学院
学位:硕士
所在单位:能源与动力学院
电子邮箱:xmz@dlut.edu.cn
超临界燃料喷射过程大涡模拟:状态方程的影响
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发表时间:2022-10-07
发表刊物:热科学与技术
所属单位:能源与动力学院
卷号:14
期号:5
页面范围:409-417
ISSN号:1671-8097
摘要:Large eddy simulations of injection and atomization of n-heptane under
supercritical conditions were performed using commercial CFD software
CONVERGE.The predictions were compared to experimental data provided by
Sandia National Laboratories.Based on two cubic equations of
state,i,e,SRK and PR equations,the effect of equations of state on
dynamics of fuel spray,fuel jet density,the variation of mass fraction
of fuel spray with temperature was studied and compared with
experimental data.The simulated results show that the fuel spray
penetration predicted by the SRK equation is deeper,and there exits a
significant density gradient on the jet flow interface for both
equations.The predictions agree well with the experimental results,but
the PR equation behaves better than the SRK equation under supercritical
conditions.The variation of mass fraction of fuel spray with temperature
is well predicted.The sharp change in density verifies that the jet flow
interface is a mixing layer between the liquid and its surrounding
supercritical fluid.The density gradient can be used to identify the
mixed layer position.
备注:新增回溯数据