查询词典 convection heat transfer

The flowand heat transfer performances of two-row bundles with different fin spacing are carriedout. The effects of fin spacing on air-side heat transfer coefficient and flow resistance arediscussed.

对不同翅片间距的两排管管束流动和传热性能进行了分析，得到翅片间距变化对空气侧表面传热系数和流动阻力的不同作用规律。

In this paper, the heat transfer process of the glass tank furnace has been analyzed by the network analysis of the electric heat transfer analagy.

本文采用电热模拟的网络法，分析玻璃池窑的传热过程。

The rationality of the total heat transfer in enelosures can be divided into two single wall's heat transfer has been further verified.

研究结果确认，近角区的换热由于水平挡板的影响明显减弱，并且进一步验证了封闭空间的换热可以分解为两个单壁换热的合理性。

In order to verify the accuracy of heat transfer coefficient,2D nonlinear finite element axisymmetric model is established by the means of finite element software MSC.Marc, which is utilized to simulate the transient temperature field coupled with phase transformation process and nonlinear synthetic surface heat transfer coefficient of several typical steels in the different quenchants.

Marc作为模拟平台，建立了淬火过程二维非线性有限元模型，模拟淬火过程中的瞬态温度场，在模拟过程中以多种常用钢在不同淬火介质中的非线性表面综合换热系数为边界条件，同时耦合了相变过程的影响。

During high pressure nitrogen quenching, besides the phase transformation process, the synthetic surface heat transfer coefficient is smooth. With increasing of nitrogen pressure, the synthetic surface heat transfer coefficient is improved.

计算结果表明，除相变阶段外，高压氮气淬火时的表面综合换热系数比较平稳，随着氮气压力的提高，表面综合换热系数呈总体增大趋势。2。

In order to understand the heat transfer characteristics of regenerative cooling in two dimensional plug nozzle, a computational model was established and numerical simulation was carried out. The flowfield and the heat transfer characteristics of plug nozzle at different ambient pressures were investigated.

为了解塞式喷管再生冷却的换热特性，建立了二维型面塞式喷管计算模型，采用数值模拟的方法，研究了不同工况下塞式喷管的流场和换热特性。

To understand heat transfer characteristics of regenerative cooling in liquid propellant rocket nozzle, numerical simulation was employed. Three dimensional governing equations for hot gas, solid wall and coolant were established respectively, and coupled calculation of flow and heat transfer was carried out.

为了解液体火箭发动机喷管再生冷却的换热特点，采用数值模拟的方法，对内喷管燃气、壁面和冷却液建立不同的三维控制方程，进行流动和传热的耦合计算。

The results of analysis show that the shock detached distance computed by two temperature model or three temperature compare well with the experiment data, and the heat transfer rate is highest for one temperature model with non-catalytic wall, and lowest for equilibrium gas model, and the heat transfer rate for perfect gas model is between the non-catalytic wall and fully catalytic wall .

结果表明：采用两温度非平衡气体模型计算的激波脱体距离更接近实验情况；采用平衡气体模型计算的壁面热流最高，一温度非平衡气体模型完全非催化的壁面热流最低，而完全气体模型的壁面热流在两者之间。

The deposits of particulate fouling on heat transfer surfaces create a barrier to heat transfer, increase pressure drop and promote corrosion of material.

微粒污垢的沉积造成换热面流动阻力增大，传热效率降低，腐蚀加剧。

The unsteady flow and heat transfer in pressure wave refrigerator is investigated numerically in the present paper. The Godunov scheme and control volume method are used to solve the 1D Euler integral equations and heat transfer equation respectively.

建立了振荡管内非定常流动与传热的数学模型，分别采用Godunov格式和控制容积法对气动方程及传热方程进行离散，得到了管内压力波形、气流速度及温度随时间的变化历程。

Listen,point and check your answers.

听，指出并且检查你的答案。

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