| 1. | Towing tank data
船模拖曳试验数据 |
| 2. | Being the nonlinear function of attack angle , the hydrodynamic forces acting upon the submersible are determined by a towing tank test
作用于潜水器上的水动力系攻角的非线性函数，可用拖曳水池试验加以测定。 |
| 3. | With the fund item sponsored by the national laboratory of hydrodynamics , the study on measurement method of propeller - induced pressure with using self - propulsion model has been carried out in depressurized towing tank
在脉动压力的模型测试研究方面，本文在水动力学国家重点实验室基金项目的资助下，对在减压拖曳水池中利用自航模进行空泡螺旋桨诱导的脉动压力的测试方法进行了研究。 |
| 4. | At present , the seakeeping experiment of shipmodel is a regular test project in the shipmodel towing tank laboratory in our school . so , the capability of wave - making system of towing tank becomes the linchpin upon which undertake to test
目前，船模耐波性试验是我校船模水池实验室经常性的实验任务，因此，水池中造波系统性能的优劣就成为能否承担试验和试验能否顺利进行的关键。 |
| 5. | Experimental data from the towing tank tests show that the hydrofoils give more water - drags on the raft ' s hull , and that the hydrodynamic performance of a ferrying raft will be improved by rational designs of the hydrofoils ' profile , angles of attack as well as the position of hydrofoil on the hull
船模水池中的模型拖曳试验表明，尽管水翼会增加门桥的水阻力，但只要合理地设计水翼的翼型、攻角和安装位置，可以改善和提高门桥水动力性能。 |
| 6. | In this respect , it tends to be an alternative of towing tank tests . the solution of 3d viscous flows around a ship in steady straightforward courses is capable of capturing more nearfield flow features than model tests and predicting viscous resistance with high accuracy , whilst for viscous flows around a ship in maneuvering motions such predictions are only in general good
三维船舶粘性流计算方法，具有准确捕捉船体周围粘性流动细节包括船模试验难以测量的流动形态的能力，已成功地应用于船舶快速性方面的阻力预报；在船舶操纵性方面，这类方法虽处于初始发展阶段，但也已获得重大进展，具有精确预报船舶操纵水动力的潜力。 |
| 7. | The advantage and disadvantage of measurement of propeller - induced pressure by using different equipment is discussed . the method to obtain self - propulsion point for full scale in depressurized towing tank is studied . the measurements of pressure of two propeller models are carried out , the results of the measurement agree with those obtained by cavitation tunnel very well , which proves this measurement is successful , and the theoretical prediction is verified too
比较了不同测试设备用于螺旋桨脉动压力测试的优缺点，探讨了在减压拖曳水池中实现实船自航点的方法，并进行了两只螺旋桨模型的脉动压力测试，经与空泡水洞中脉动压力的测试结果进行比较，说明该项测试是成功的，同时也对脉动压力的理论预报结果做了验证。 |
| 8. | We have made a full theoretical analysis of the wave property and the wave parameters of the flap - type wave generator in the towing tank of our school , and confirmed that should make the factor that the performance of the wave generator give play to normally to influence . in allusion to that the old wave generator can not simulate sea wave , upgrade and transform to this system change the control computer system and install additional d / a change card , redesign the wave control interface and transmission means of control signal , give up the disk machine that can not be used , make the wave - making control voltage signal that has translated direct input the wave controller , make wave controller to make waves through servo system
对我校船模水池原有的摇板式造波系统的性能进行了理论分析，针对水池原有造波机系统模拟海浪的不足，对该系统进行升级与改造，更换了主控计算机并加装d a转换卡，重新设计了造波控制信号的接口与传输方式，舍去了原系统中现已淘汰的磁盘机，使转换后的造波控制电压信号直接输入到造波控制器中，再由造波控制器通过液压伺服系统驱动造波板进行造波。 |
| 9. | ( international organizations - such as the imo ( international maritime organization ) , the ittc ( international towing tank conference ) and the sname ( society of naval architects and marine engineers ) have become more active in the stimulation of research on those aspects of ship maneuverability which are vital for navigation safety and oceans protection
另外，国际拖曳水池会议( internationaltowingtankconference ， ittc )和各国造船与轮机工程师协会( societyofnavalarchitectsandmarineengineers ， sname )在推动船舶操纵性研究方面也起了很大的积极作用。 |
| 10. | The prediction of propeller - induced hull pressure fluctuation in non - uniform flow is studied by using theoretical calculation and model experiment systematically . an intact method and computer program for the prediction of unsteady cavitating propeller - induced hull pressure fluctuation in non - uniform flow is set up in this paper . the measurement of propeller induced hull pressure fluctuation in depressurized towing tank carried out in this paper is the first time inland
本文从理论计算和模型试验两个方面系统地研究了不均匀流场中螺旋桨空泡诱导的船体表面脉动压力的预报问题，建立了一套完整的预报非定常空泡螺旋桨诱导的船体表面脉动压力的方法和程序，并在国内首次完成了在减压拖曳水池中进行空泡螺旋桨诱导的船体表面脉动压力测试。 |
