查询词典 fluid dynamics

In this dissertation, according to the theory of Mechanical Dynamics and Multi-body Dynamics, a simulation model of NJ2046 light off-road vehicle including suspension system, steering system and tires is built with the software CarSim and so the vehicle steering characteristics are analyzed with the step angle input of steering wheel.

摘要本文根据机械系统动力学、多体动力学理论，运用动力学仿真软件CarSim建立了包括悬架系统、转向系统和轮胎等模型的NJ2046越野汽车整车仿真模型，在此基础上分析了NJ2046越野汽车在方向盘转角阶跃输入时的转向特性，通过对不同车速、不同载荷条件下的仿真计算，得出了在这些条件下该车具有的不同表现特征，揭示了转向特性与车速、载荷和轮胎的内在关系。

Thermal hydraulics: actuation systems, power shift transmission systems, anti-lock braking systems, landing gear, fuel injection systems, active suspension systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, air and steam cycles, high-pressure gas, gas transmission, adsorption, gas phase reactions, HVAC, ECS, multi-species gaseous systems* Multiphase fluids: refrigeration, air-conditioning, climate control, cryogenic piping networks, steam/water systems, or fuel systems with exotic, volatile fluids.* Systems control hardware and software evaluation data acquisition sampling rates, asynchronous communication, analog and digital electronic filters, control loop execution rates, network (CAN bus communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, power electronics, batteries, etc. Flight dynamics, and control systems of all kinds including digital filters

MSC Easy5的独到之处在於：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

Thermal hydraulics: actuation systems, power shift transmission systems, anti-lock braking systems, landing gear, fuel injection systems, active suspension systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, air and steam cycles, high-pressure gas, gas transmission, adsorption, gas phase reactions, HVAC, ECS, multi-species gaseous systems* Multiphase fluids: refrigeration, air-conditioning, climate control, cryogenic piping networks, steam/water systems, or fuel systems with exotic, volatile fluids.* Systems control hardware and software evaluation data acquisition sampling rates, asynchronous communication, analog and digital electronic filters, control loop execution rates, network (CAN bus communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, power electronics, batteries, etc. Flight dynamics, and control systems of all kinds including digital filters

MSC Easy5的独到之处在于：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

A brief introduction of the basic principle about damage dynamics and evolution was made in this paper. At the same time, using the theory of the pattern dynamics, we studied all earthquakes M(subscript L≥5.0 which located on Zhangjiakou-Bohai Sea earthquake belt in the capital zone.

本文简要介绍了细观损伤演化诱致突变理论和图型动力学的基本原理，并对首都圈地区张家口－渤海地震带上M5.0以上地震进行分析研究。

It provides not only fundamental principle and analysis of Modern Applied Mechanics and Dynamics but also applications in research areas such as stability, rigid body and rigid-body systems, movements of celestial body and spacecraft, vibration, nonlinear dynamics, et al.

它的研究一方面提供了现代应用力学以及动力学一般理论最基本的原理和方法，另一方面，它本身也给出了在稳定性、刚体与刚体系、天体与宇航器的运动、振动、非线性动力学等领域中一系列有实用价值的成果。

Protein dynamics are important to function, but it has been difficult to study dynamics over the relevant time scale--nanoseconds to microseconds. Now Lange et al.

蛋白质的动力学研究对蛋白质的功能来说非常重要，但是很难在相应的时间刻度内研究其动力学。

Under these circumstances, this dissertation was carried out to encompass the general methods and concrete implementing techniques of multi-body dynamics and structural dynamics analysis in various stages of I.C.

本文即是在上述背景下，围绕内燃机运动机构产品在应用研发不同阶段进行多体动力学和结构动力学分析的一般方法和具体实施技术展开课题研究工作。

This comprehensive text links abstract mathematics to engineering applications in order to provide a clear and thorough exploration of fluid dynamics.

这一全面的文本链接抽象数学的工程应用，以提供一个明确和流体动力学，深入探索。

He is known primarily for his study of fluid dynamics and his aeronautic inventions.

他主要为他的流体动力学的研究和他的航空发明被认识。

Airstream distribution in a typical room with cold air diffusion was investigated by the method of computational fluid dynamics.

以某一典型的空调房间为研究目标，利用计算流体动力学，研究在低温送风条件下，室内气流组织的分布状况。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。