Simulation of Coupled Unsteady Flow and Heat Conduction in Turbine Stage
Simulation of Coupled Unsteady Flow and Heat Conduction in Turbine Stage
复制标题
涡轮级非定常流动与热传导耦合模拟
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
D. Dorney,
中科院分区：
文献类型：
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作者：
D. Sondak;D. Dorney,
将三维非定常可压缩有限差分Navier-Stokes方程求解器与三维非定常有限差分导热方程求解器耦合，研究了三维非定常有限差分导热方程中的共轭传热问题。通过计算气缸内的非定常传热并将计算结果与解析解进行比较，验证了传热求解器的有效性，然后将该代码应用于具有不均匀进气温度过程的高压涡轮级，该涡轮级是现代高函道比涡扇发动机的典型涡轮级。本文详细研究了转子叶片表面和叶片内部的非定常温度场。表面温度的结果也已与那些从流模拟，其中叶片表面被假定为绝热的，证明了耦合方法的需要。
A three-dimensional, unsteady, compressible, e nite difference Navier ‐Stokes solver has been coupled with a three-dimensional, unsteady, e nite difference conduction heat-transfer solver to study conjugate heat-transfer problems in turbomachinery. The heat-transfer solver was validated by computing unsteady heat transfer in a cylinderandcomparingtheresultswithananalyticalsolution.Thecodewasthenappliedtoahigh-pressureturbine stage, typical of those found in modern high-bypassturbofan engines, with a nonuniform inlettemperatureproe le. The unsteady temperature e eld of a rotor blade, both at the surface and within the blade, has been examined in detail. The surface-temperature results have also been compared with those from a e ow simulation in which the blade surfaces were assumed to be adiabatic, demonstrating the need for the coupled approach.