Body force-based method for determining flow velocity of sea water artesian circulating system

Abstract

[Objectives]Establish a method capable of quickly calculating the flow velocity of an artesian circulating system,in order to optimize and compare multiple design schemes for key components of the sea water artesian circulating system.[Methods]Numerical simulation of the sea water artesian circulating system of a ship is done by using the RANS method and the SST k-ω turbulence model. Body force is used instead of main components to do numerical analysis. A method for finding the intersection point by using system characteristic curve and component performance curve is proposed,to identify the flow velocity points of sea water artesian circulating system.[Results]By comparing the operating condition points obtained by the body force method with those obtained by the component-hull combined calculation method,the calculation accuracy of body force is verified,so as to determine the flow velocity of the sea water artesian circulating system. The body force method is more convenient and less computationally intensive than the combined calculation method,therefore the body force method is more suitable for multi-scheme simulation analysis on system components.[Conclusions]The body force method can simplify the numerical simulation calculation and provide a reference for predicting the flow velocity and flow of the artesian circulating system of the ship.

Keywords

• artesian circulating system
• body force method
• numerical simulation