نوع مقاله : یادداشت فنی
1 دانشکده مهندسی مکانیک، دانشگاه صنعتی شریف
2 دانشکده مهندسی مکانیک ، دانشگاه صنعتی شریف
عنوان مقاله [English]
In small towing tanks , due to tank and model dimension limitations, tests has been perfomLed atlow Reynolds number and lan1inar flow regimes. In this condition, flow momentum is low and as are sult, the probability of flow separation is high. This has been resulted to a difference in flow behavior around the model and prototype. Therefore the scale effect in model testing cannot be avoided, which will be grater in small towing tanks . For eorrec.tion of results in all towing tanks, the seale effec.t correction factor has been used. This paper is a result of tests done on a model of a 35000 tons Produet Carrier. Tests have been done with and without a turbulent simulator and the scale c.orrec.tion fac.tor for both conditions has been evaluated. Results show that, without a turbu lent simulator, this factor approximate ly has been changed linearly. And, in the case of using a turbu lent simulator, the amount of this factor decreased extremely and varied nonlinearly.