本文论述了计算所得的非稳态流场的时均值。
The time-average of the unsteady flow-field obtained in the computation is discussed.
建立了喉栓发动机稳态流场的数值模型，用原理试验结果对数值模型进行了校验。
The main contents and conclusions in the paper including: Estiablished the steady numerical models of pintle controlled solid rocket motor, and verified the model with the theoretical experiment data.
采用双时间步和预处理相结合的方法计算非稳态流场，保证了采用预处理方法后计算结果的时间精确性。
Time precision of calculation results of unsteady flow field was ensured by using combined method of dual-time step and preconditioning.
对超声速冲压发动机进气道—喉道段进行了二维稳态流场数值模拟，给出了反压与攻角变化对冲压发动机进气道起动状态影响的数值模拟结果。
The prevailing software numerically simulates a 2-D internal steady flow of the ramjet inlet-isolator; the numerical simulation results of the state of start in the ramjet inlet are presented.
并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。
Unsteady flow and concentration fields in the liquid phase of a gas-liquid contacting system were simulated to show the natural convection by utilizing the finite-element CFD method.
用粒子成像测速技术（PIV）和稳态法分别测量均相流体在热管生物反应器中湍流时的流场、温度场；
The flow field and temperature field of the uniformity phase fluid were measured by PIV and the steadystate method during the state of onflow.
利用计算流体动力学(CFD)软件，建立了催化转化器流场的二维模型，对催化转化器的稳态流动进行了数值模拟。
A two-dimension model for the flow field in catalytic converter was established, and the steady state flow was simulated with the computational fluid dynamics (CFD) code.
结果表明，在实验范围内，由于冷凝使畸变流场的平均紊流度增加12～25%，稳态畸变指数DC_（60）可能增加、不变或减小。
The condensation leads the average turbulence to be increased by 12-25% and the steady-state distortion factor, DC60, to be changed obviously in the experimental range.
采用PHEONICS数值仿真软件，对热电冰箱的无负载瞬态工作、有负载稳态和瞬态工作时箱内温度场和流场进行了数值模拟。
In steady and transient state, air temperature field and flow field inside the thermoelectric refrigerator, loaded and no loaded, are calculated by using a CFD software PHEONICS.
对在均匀流场作用下的二维非稳态晶体生长控制方程进行了分析，证明了原定解问题的解是稳定的。
The stability about the solution of the original problem is proved by analyzing a two-dimensional time-dependent control equation for crystal growth in a uniform convection field.
同时对稳态和瞬态的流场进行解析，并对两者结果进行比较，分析叶轮旋转加速对流体流动的影响。
The influence to interior flow of pump by impeller accelerating is analyzed according to comparison of unsteady results and steady results.
应用计算流体力学(CFD)方法对转动坐标系下的三维环形密封流场进行了准稳态数值模拟，在此基础上进行了转子动力系数的计算。
Three dimensional annular seal flow field was simulated quasi-steadily with computational fluid dynamics (CFD) method in a rotating reference frame. The Rotordynamic coefficients were calculated.
为分析搅拌针的形状对点焊稳态过程流场的影响，建立了圆柱形、三角形和方形三种不同形状的搅拌针模型。
The models of cylindrical, triangular and square pins are created to predict the effect of the pin shapes on the material flow in the steady-state welding.
最后结合在不同转速下的流场稳态计算结果，对叶栅进行在气动力作用下动态响应分析。
Finally, the dynamic response study analyzes rotor cascade under aerodynamic force with the steady state results of the flow field calculations.
PIV技术可用于瞬时体积流量的测量以及流场非稳态特性的研究。
This confirms that the PIV system can be applied to measure the instantaneous volume flow rate and investigate the unsteady characteristics.
PIV技术可用于瞬时体积流量的测量以及流场非稳态特性的研究。
This confirms that the PIV system can be applied to measure the instantaneous volume flow rate and investigate the unsteady characteristics.
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