查询词典 convection heat transfer
- 与 convection heat transfer 相关的网络例句 [注:此内容来源于网络,仅供参考]
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A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.
对本文提出的各种算法,编制了数值计算程序,并把它应用于环境水力学反问题诸多领域,包括污染物一维非恒定扩散逆过程反问题,对流扩散方程逆过程反问题,河流水质纵向弥散系数反问题,非线性Boussinesq方程反问题,河流水质多参数识别反问题,BOD-DO水质模型参数反演问题,对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题,二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。
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The results show that the increasing Marangoni number will lead to more nonlinear distribution of temperature field, but streamfunction of the cell center; vorticity on the wall and peak value of velocity diminish first, then increase, finally lose stability. The thermocapillary convection in the whole liquid zone appears to get stronger along with the augmentation of Prantal number. The effect of increasing of Biot number on temperature and flow fields is not obvious although the convection is strengthened a little. As increasing the aspect ratio A, thermocapillary convection induced by temperature gradient and liquid viscosity becomes stronger.
结果表明:温度场的非线性分布随着Ma数的增大而加剧,但对流涡胞中心流函数、壁面涡量和轴向、径向速度峰值并不象温度场随着Ma数的增大而单调增大,而是先减小,然后增大,最后失稳,表明Ma数对热毛细对流的影响比较复杂,针对不同的物理模型,会导致完全不同的流态;Pr数愈大,流体的热扩散能力在粘性扩散与热扩散能力之比中愈占支配地位,当Ma数一定时,热毛细对流随Pr数的增大在整个液体区域内有增强的趋势;Bi数增大,热毛细对流有所增强,但不甚明显;A的增大使得由温度梯度和流体粘性诱导的热毛细对流随之增强。
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In this paper, a high order accuracy difference method is presented for solving unsteady convection diffusion equation by using Implicit Perturbation Finite Difference scheme. Firstly, we use the steady convection diffusion equation, the constant coefficients of this equation are expanded to power series of grid-spacings, then the high-order Perturbation Finite Difference scheme is obtained by determining the coefficients of the power series. Put this scheme on unsteady convection diffusion equations and modified it, the IPFD scheme is constructed.
本文利用摄动差分思想,对定常对流扩散方程中的空间微商系数进行摄动展开,展开幂级数系数通过消去摄动格式修正微分方程的截断误差项求出,由此获得方程的隐式摄动差分格式,将此方法应用于非定常对流扩散方程,并加以修正,得到该方程的修正隐式摄动差分格式。
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By using the Eulerian-Lagrangian combined method, the convection-diffusion equation is spitted into the diffusion terms and convection terms. For convection terms, the implicit method of characteristics using time-line interpolation with high accuracy is adopted. While for the diffusion terms the conventional finite difference method is used.
采用欧拉—拉格朗日混合解法,将对流—扩散方程中的扩散项和对流项分裂求解,应用高精度时间序列插值的特征差分隐格式求解对流项,扩散项采用传统的有限差分法。
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The research results are as follow: 1. Through the air convection experiment in laboratory, we find that the real measurement of natural convection in laboratory under obturated circumstances is almost sameness to theory calculation. The most notable part of air convection is in the middle part of crushed stones. The bigger the size of the crushed stones is, the bigger the measured wind value is.
主要结论如下: 1、通过室内模拟自然对流试验,得出在室内封闭条件下测得的自然对流效应跟理论计算值相差不大,自然对流效应最明显的部分位于块石层的中间部位;实测的对流涡包都是由一开始的无序状态往块石层的中间部位发展;随着块石粒径的增大,测得的最大风速值也随之增大。
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Evaluates the zero-equation model provided by Chen based on CFD simulation of three typical airflows(forced convection,mixed convection and natural convection)in air-conditioned and ventilated rooms.
为了对Chen提出的零方程模型进行评价,研究了三种典型的空调通风房间气流组织工况(强迫对流、混合对流和自然对流),同时采用Prandtl的混合长度理论和双方程K-ε湍流模型的计算结果作为比较。
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Entertainment Canton Heat Transfer "changshu" Heat Transfer Products Ltd. Product introduction categories:"1" Offset Hectograph transfer paper heat transfer paper color printing, photo effects figure?
广州艺都烫画《常熟》有限公司产品介绍烫画类:《一》柯式烫画纸 Hectograph transfer paper 分色印刷,照片效果
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Determination of heat transfer coefficient for corrugate pipe heat exchanger is discussed, and the method of separating surface heat transfer coefficient from heat transfer coefficient with genetic algorithm is put forward.
讨论了波纹管换热器传热系数的测定,提出了采用遗传算法将对流表面传热系数从传热系数中分离出来的方法。
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The discrete heat and moisture transfer equation and control conditions are obtained with finite volume method. The temperature and moisture distribution and transient heat and moisture absorbing and desorbing of porous envelop are calculated with numerical method. The program for porous envelop heat and moisture transfer are developed by use of FORTRAN. The heat and moisture transfer model is verified using the examples given out in the reference [41] and testing data of funk hole located in A zone Chongqing university.
采用有限体积法对多孔材料热湿传递方程及控制条件进行离散,用数值方法求解多孔围护结构温湿度分布和壁面的瞬时热湿吸放量,采用FORTRAN语言编写了围护结构热湿传递计算程序,并用文献[41]给出的算例和重庆大学A区防空洞的测试数据对模型进行了验证。
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Four processes in gas-burning vacuum hot water boiler are researched in the paper:gas combustion process, heat transfer from gas to water, water boiling heat transfer, heat transfer of the process of congealing from steam to water by heat exchanger.
研究的燃气真空热水锅炉包括四个同时进行的过程燃料的燃烧过程,烟气向水的传热过程,水的沸腾传热过程,蒸汽与水通过换热器的凝结传热过程,在这个循环过程中,通过对其传热机理的分析研究,进行了真空锅炉内部结构的热工计算。
- 相关中文对照歌词
- Certified
- D-Day
- The Heat
- Take The Heat Off Me
- Born Under Punches
- Like A Candle
- The Heat Is On
- Heat Of The Night
- The Heat Is On
- Go Slow
- 推荐网络例句
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Listen,point and check your answers.
听,指出并且检查你的答案。
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Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.
但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例,经过临床的诊断后,其中施以温针治疗的48例,疗效显著,报道如下。1临床资料本组病例48
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Some known methods of remnant pump detection and automatic laser shut-down use communications, such as an OSC.
一些已知的残余泵浦检测和自动激光关断的方法利用诸如OSC的通信。