由模型计算结果可知,固体颗粒的加入使流体的湍流程度增强,强化了传热,降低了壁温。
The calculation results of the model show that the addition of solid particles makes the fluid turbulent flow enhance, the heat transfer enhance and the wall temperature decrease.
该新方法更精确的反映了锅炉过热器、再热器壁温分布的内在本质,并使计算方向趋向简明。
This new method predicts the distribution of the super-heater and re-heater's tube temperature more precisely, and the concept of the calculation is more concise.
与定壁温条件下的理论解对比,表明该方法的计算结果与理论解相吻合。
By comparison with the analytic solution on the boundary condition of constant wall temperature, it showed that the results of computation are agreement with analytic solution well.
该文阐述了600MW超临界压力锅炉螺旋管圈水冷壁传热和壁温计算的研究结果。
The paper presents calculation and research results of heat transfer and wall temperatures of coiled tubes in the cooling walls of a 600MW supercritical pressure boiler.
分析了两相多循环脉冲爆震发动机工作过程中爆震室内、外壁换热特性,建立了爆震室壁温分布计算模型。
The heat transfer characteristics of the detonation chambers outer and inner wall were analyzed when the pulse detonation engine model was operated in the multi-cycle mode.
因壁温计算和室温计算互相耦合,采用迭代计算的方法求解壁温和室温。
Mathematic calculation of the wall temperature and CFD calculation of the indoor temperature are dependent on each other, so they are determined through an iterative procedure.
计算结果表明流速越大,过饱和度越小,结垢过程越易为表面反应所控制;流速越小,过饱和度越大,结垢过程越易为对流传质所控制,且往往发生在液壁温差较大,壁温较高的情况下。
The calculation results show that the greater the flow velocity, the lower the supersaturation degree, and the easier the scale formation process will be controlled by a surface reaction.
过热器再热器壁温在线监测技术,可以通过安装少量的炉外壁温测点,实时计算整个管组各部位的金属壁温。
The superheater and reheater on-line metal temperature monitoring technique used a limited number of metal temperature measuring points situated outside of the.
本文在研究该结构冷却机理的基础上,从实用的角度出发,以某型现役发动机燃烧室改型设计为例,对瓦块式迷宫冷却结构进行设计,并进行换热分析和壁温计算。
On the basis of investigating cooling mechanism of this cooling structure and from the practical point of view, tile maze cooling structure is designed by taking the modification desi.
采用三维有限元模型对液体火箭发动机铣槽推力室进行了壁温分布计算。边界条件按一维经验公式处理。计算中比较了不同冷却剂流量。
A calculation of the wall temperature distribution in liquid propellant rocket engine chamber with milled grooves was completed by the aid of three-dimensional finite element method.
计算结果表明:随着热通量的增加,流场的速度、湍流强度和壁温均升高。
The simulation results demonstrated flow velocity, turbulence kinetic energy and wall temperature increased with increment of heat flux.
结果表明,喷管下游端的壁面辐射损失高达壁面总热流的20 ~ 30%,在壁温计算时不容忽略。
Results showed that the net heat loss on the downstream side of the jet nozzle could reach 20 ~ 30% of total heat flux. Therefore it can not be neglected in calculating the wall temperature.
直接给出屏式过热器壁温计算入口断面烟气温度参数;
The calculating method of two great region simplifies amount of furnace heat transfer calculation and provides smoke temperature directly on calculating section in calculation of scr…
直接给出屏式过热器壁温计算入口断面烟气温度参数;
The calculating method of two great region simplifies amount of furnace heat transfer calculation and provides smoke temperature directly on calculating section in calculation of scr…
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