Potential function and vector algebraic integral method of additional pressure drops in arbitrary pipes under ocean conditions

作者：Ma Jian^*; Huang Yan Ping; Li Long Jian

来源：Nuclear Power Engineering, 2012, 33(SUPPL. 1): 14-18.

• Analytical results
• Body forces
• Centrifugal Forces
• Integral method
• Momentum equation
• Non-inertial frame
• Ocean conditions
• Parallel motion
• Pipe motion
• Pipe rolling
• Potential function
• Rolling motion
• Tangential force

Pipe parallel and rolling motions will result in additional pressure drops because of the introduction of additional body forces under ocean conditions. To obtain universal and convenient analytical solutions to additional pressure drops, this paper starts with the hydrodynamic momentum equation in the non-inertial frame. The pipe motion is divided into parallel motion and rolling motion. The analytical solutions to additional pressure drops respectively induced by parallel motion and rolling centrifugal force are achieved by means of hydrodynamics potential function analysis. This paper also starts with mathematical and physical definitions of additional pressure drops. The pipe rolling motion is divided into vertical rolling and parallel rolling. The analytical solution to additional pressure drops induced by rolling tangential force is achieved by using the vector algebraic integral method. Finally, the applicability of these solutions is discussed. The analytical results show that each additional pressure drop in an arbitrary pipe under ocean conditions can be resolved accurately.

• 出版日期2012