模拟试验

Three axis optical tracking test table is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory.

摘要三轴光学跟踪试验转台是一种在实验室条件下复现飞行器或导弹在空中飞行姿态半实物仿真的有力工具，它和目标发生装置组合在一起模拟导弹跟踪目标的过程，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

ABSTRACT Three-axis flying posture simulator is a set of precise and sophisticated equipment with important significance of economy and national defence. TFPS is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory. TFPS, together with equipment producing infrared target, simulates the attacked target and flying missile, which can really simulate the various flying postures in space and dynamic characteristics. Thus, the performances of sensors, control system and actuator and so on can be tested and evaluated, which provides various reference bases for developing, improving and redesigning flying weapons.

三轴飞行姿态仿真转台是具有重大经济价值和国防战略意义的高精尖试验设备，它是在实验室条件下复现飞行器或导弹在空中飞行姿态的有力工具，它和红外目标发生装置组合在一起模拟袭击目标和飞行导弹，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

Chapter 5: Evaluate a given water-air intercooler both in academic and experimental ways so as to test the validity of the two ways.

第五章：以6BTA型水空中冷器为例，进行数值模拟评估，以验证试验平台和数值模拟评估方法的正确性。

Visual Rice Growth Models system represented an effort to design crop modeling software with object-oriented paradigm and to organize classes in system with model-document-view architecture. Firstly, the crop-environment system was abstracted as many subsystems and physiological processes with object-oriented paradigm while many classes were established to simulate the behaviors of these subsystems and physiological processes. In VRGM, the document-view architecture in Visual C++ was extended as model-document-view architecture for agricultural integrated system. In the model-document-view architecture, document gets the final simulation results by manipulating the models classes and acts as a communicating intermediacy between model and view. Views display the simulation results and translate users' operation and data entering to document. The architecture separates the domain models, data management and user interface.

中文题名可视水稻生长模型与智能栽培专家系统的研制副题名外文题名 Studies on visual rice growth models and cultivation expert system of computational intelligence 论文作者米湘成导师邹应斌研究员学科专业作物栽培学与耕作学研究领域\研究方向作物模拟与专家系统学位级别博士学位授予单位湖南农业大学学位授予日期2001 论文页码总数64页关键词作物生长模拟生长模型水稻馆藏号BSLW /2003 /S126 /2 本研究系国家"九五"攻关项目"水稻大面积高产综合配套技术研究与示范"课题的子专题，并结合水稻高产栽培技术资料和水稻专家的知识、经验以及科研成果，研制成了可视水稻生长模型(Visual Rice Growth Models，VRGM)及水稻高产栽培专家系统，并在此基础上进一步利用人工神经网络模型、模糊逻辑技术和田间栽培试验，对生长模型和专家系统进行了改进。

In the dissertation, a dynamic model has been established for a torque converter with lock-up function.

本文还建立了闭锁式液力变矩器的力学模型，进行了液力变矩器闭解锁过程动态性能模拟和分析，对部分模拟结果作了试验验证。

The typical molten pool of high energy beam welding is in nailhead shape with large aspect ratio. In order to simulate it more precisely, a new heat source model, Rotary-Gauss body heat source model, is established.

为准确地模拟出大深宽比的"钉头"状高能束熔池形状，提出了新的旋转Gauss曲面体热源模型，并进行了实际的数值模拟与测量试验。

Adopting numerical simulation and orthogonal tests, the optimization efficiency is improved greatly and the simulation blindness dropped down.

采用数值模拟和正交试验相结合的方法，从而降低了模拟的盲目性，大大提高了优化的效率。

Methods: The transect fracture were simulated in 12 fresh cadaver phalange specimens.

在12例新鲜尸体手指标本上，模拟横断骨折，分别采用弧形交叉髓内钉与普通交叉克氏针进行固定，以MTS试验机模拟持续被动运动进行屈伸疲劳，检测固定效果。

The effect of Reynolds number on rudder hydrodynamic performance is also analyzed. Up to the stall angle the computed lift and drag agree well with measurements and other author's calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under-predicted. The solver is used to investigate laminar and turbulent separated flows around a 6: 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces. The second separation flows are successfully identified in both laminar and turbulent flow simulations.

应用所开发的求解器，以6：1长椭球体为算例计算了回转体在大攻角下定常斜航运动时的三维粘性流场及水动力，对层流流动和湍流流动分别进行了计算，分析了层流与湍流分离流动和涡旋产生的特点及其对水动力的影响；计算结果与他人的试验和计算数据比较，吻合程度良好，表明应用本求解器能够正确模拟这种以层流／湍流分离流为主的复杂粘性流动，得到相当精确的水动力，检验和验证了该求解器精确模拟回转体在大攻角下的粘性分离流动和计算水动力的能力。

The solver is used to investigate laminar and turbulent separated flows around a 6:1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces. The second separation flows are successfully identified in both laminar and turbulent flow simulations. The computations are shown to agree well with available experimental and numerical data and the physics of 3D large-scale flow separations and vortex shedding are confirmed.

应用所开发的求解器，以6：1长椭球体为算例计算了回转体在大攻角下定常斜航运动时的三维粘性流场及水动力，对层流流动和湍流流动分别进行了计算，分析了层流与湍流分离流动和涡旋产生的特点及其对水动力的影响；计算结果与他人的试验和计算数据比较，吻合程度良好，表明应用本求解器能够正确模拟这种以层流/湍流分离流为主的复杂粘性流动，得到相当精确的水动力，检验和验证了该求解器精确模拟回转体在大攻角下的粘性分离流动和计算水动力的能力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。