Heat Transfer to a Hemispherical Body in a Supersonic Argon Plasma
Heat Transfer to a Hemispherical Body in a Supersonic Argon Plasma
复制标题
超音速氩等离子体中向半球体的传热
作者：
R. Nowak;M. Yuen
传热mcasured为导电（铜）和非导电（碲）模型在马赫4.6低密度Ar等离子体中的存在和不存在的磁场高达0.5 Telsa。结果表明，无论有无磁场，局部壁电流的重要性。对于传导模型，进入表面的电子通量增加了停滞区的热通量相比，非传导模型。对于非传导模型，理论预测零磁场下的热传递，但未能预测在高磁场的停滞区略有增加。（DLC）
Heat transfer was mcasured for conducting (copper) and nonconducting (teflon) models in a Mach 4.6 low-density Ar plasma in the absence and presence of magnetic fields up to 0.5 Telsa. Results show the importance of local wall currents both with and without magnetic field. For the conducting model, an electron flux entering the surface increased the stagnation-region heat flux compared to the nonconducting model. For the nonconducting model, theory predicts well the heat transfer for zero field but fails to predict the slight increase at the stagnation region with high magnetic field. (DLC)