1) thermal entrance region
热进口段
1.
Numerical analyses are conducted for combined free and forced laminar convection in the thermal entrance region of inclined pipes with buoyancy-aided flow.
用数值分析方法研究了倾斜管内热进口段自然强制同向复合对流传热 ,分析了浮力、倾斜角及轴向导热对流动和传热特性的影响 ,得到了速度、温度、壁面剪切应力、局部及平均Nusselt数的分布和变化 研究结果显示Pe=71时平均Nusselt数的最大值位于 2 5°～ 45°之间 ,Pe=2 5时则在 90°处出现 。
2.
Free convection effects on laminar forced convective heat transfer have been investigated for airflow in the thermal entrance region of a horizontal pipe.
本文研究了水平管内空气层流强制对流传热时，自然对流对热进口段传热和流动的影响。
3.
On the ground of general control equations, by paying attention to heat transfer characteristics in thermal entrance region and optimizing relations which affect the heat transfer, such as ones for velocity fields , eddy diffusivities for heat and momentum transfer, the present authors established a calculation model easy to be solved with the help of computer program.
从一般控制方程出发,根据环管热进口段传热特点,结合优化选择影响传热的诸如速度分布、湍流热量扩散率和动量扩散率等半经验关系式,建立能借助计算机理论求解的计算模型,并在进一步简化条件下计算、分析了轴向导热对进口段传热的影响。
2) Cpmax in inlet section
进口段Cpmax
3) entrance region
进口段
1.
Wall shear stress in entrance region in horizontal air-water bubbly flow;
水平管内气液两相泡状流进口段壁面切应力
2.
Numerical simulation of irreversibility due to forced convection in entrance region of duct;
管内进口段对流换热过程不可逆性的数值模拟
3.
First order slip velocity and jump temperature boundary conditions are employed to deter- mine the developing flow and heat transfer in the entrance region of a microtube.
模拟结果表明:流动进口段长度随Kn增加而增加,但随动量调和系数减小而减小;热进口段长度随Kn增加而增加,但随动量调和系数及热调和系数减小而减小;Nu数随Kn增加及热调和系数减小而减小,但随动量调和系数减小而增加。
4) inlet section and outlet section
进出口段
5) entrance length
进口段长度
1.
In this paper, the velocity distribution model, the pressure loss coefficient and the calculating method of bydrodynamic entrance lengths are derived in laminar entrance region of arbitrary triangular ducts by the means of an integral method, and then the concrete calculation and experiment are carried out for isosceles triangular ducts with two vortexes(2α= 45.
本文利用积分方法推出了任意顶角三角形管道层流进口段流动的速度分布模型、压力损失系数和进口段长度计算方法,并对两种倾角(α=β=22。
6) subsection intake
分段进水口
1.
Taking improved constructed rapid infiltration system as experimental device, schoolyard domestic sewage as object, the methods of adding subsection intake and overflow pool was used to study the total nitrogen removal efficiency of improved constructed rapid infiltration.
以改进型CRI系统为研究装置,以校园生活污水为研究对象,分别采取增加分段进水口以及溢流池的方式,探讨系统TN去除效果。
补充资料：多段换热式反应器
分子式：
CAS号：
性质：也称为外部换热式反应器。其特点是绝热反应过程与换热过程相间进行。已反应的反应物系与尚未反应又需要预热的冷原料或其他冷却介质在间壁换热器中换热，因此，换热后反应物系只有温度变化而无组成变化。
CAS号：
性质：也称为外部换热式反应器。其特点是绝热反应过程与换热过程相间进行。已反应的反应物系与尚未反应又需要预热的冷原料或其他冷却介质在间壁换热器中换热，因此，换热后反应物系只有温度变化而无组成变化。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条