HEAT TRANSFER CHARACTERISTICS OF GASEOUS FLOWS IN MICROCHANNELS
HEAT TRANSFER CHARACTERISTICS OF GASEOUS FLOWS IN MICROCHANNELS
复制标题
微通道内气体流动的传热特性
DOI：
10.1080/10893950913279
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
H. Toriyama
中科院分区：
文献类型：
--
作者：
Y. Asako;H. Toriyama
通过求解二维可压缩动量和能量方程，得到了平行板微通道内气体流动的传热特性。数值方法基于任意拉格朗日-欧拉（ALE）方法。对具有绝热壁的通道进行了计算，得到了绝热壁温度。通道高度范围为10 ~ 100 μm，通道长度固定为30mm。滞止压力为1.1 × 105 ~ 4 × 106 Pa。出口压力固定在大气压。对具有等温壁的通道也进行了计算。通道长度和高度的纵横比为100或200。通道高度范围为10 ~ 100 μm。并与常规尺寸平行板状通道中不可压缩流动的总体温度和总温度进行了比较。
Two-dimensional compressible momentum and energy equations are solved to obtain the heat transfer characteristics of gaseous flows in parallel-plate microchannels. The numerical methodology is based on the arbitrary-Lagrangian-Eulerian (ALE) method. The computations were performed for channels with adiabatic walls to obtain the adiabatic wall temperature. The channel height ranges from 10 to 100 μm and the channel length is fixed at 30 mm. The stagnation pressure varies from 1.1 × 105 to 4 × 106 Pa. The outlet pressure is fixed at the atmosphere. The computations were also performed for channels with isothermal walls. The aspect ratio of the channel length and height is 100 or 200. The channel height also ranges from 10 to 100 μm. The bulk and total temperatures are compared with that of the incompressible flow in the conventional-sized parallel plate channel.