Fluid-solid interaction of resistance loss of flexible hose in deep ocean mining
来源期刊：中南大学学报(英文版)2012年第11期
论文作者：WANG Zhi(王志) RAO Qiu-hua(饶秋华) LIU Shao-jun(刘少军)
文章页码：3188 - 3193
Key words：resistance loss; flexible hose; fluid-solid interaction; deep-ocean mining; finite element method
Abstract: The resistance loss of transportation was studied and the influences of buoyancy layout, mineral content and elastic modulus of flexible hose were investigated based on three-dimensional finite element model of fluid-solid interaction by MSC.MARC/MENTAT software. The numerical results show that the resistance losses increase with the increase of mineral content Cv and velocity of internal fluid v and decrease with the increase of elastic modulus E of flexible hose. The buoyancy layout and the velocity of internal fluid have greater impacts on the resistance losses than the elastic modulus of flexible hose. In order to reduce the resistance losses and improve the efficiency of the deep-ocean mining, Cv and v must be restricted in a suitable range (e.g. 10%-25% and 2.5-4 m/s). Effective buoyancy layout (such as Scheme C and D) should be adopted and the suitable material of moderate E should be used for the flexible hose in deep-ocean mining.
WANG Zhi(王志)1,2, RAO Qiu-hua(饶秋华)2, LIU Shao-jun(刘少军)3
(1. Schools of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China;
2. School of Civil Engineering, Central South University, Changsha 410083, China;
3. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)
Abstract:The resistance loss of transportation was studied and the influences of buoyancy layout, mineral content and elastic modulus of flexible hose were investigated based on three-dimensional finite element model of fluid-solid interaction by MSC.MARC/MENTAT software. The numerical results show that the resistance losses increase with the increase of mineral content Cv and velocity of internal fluid v and decrease with the increase of elastic modulus E of flexible hose. The buoyancy layout and the velocity of internal fluid have greater impacts on the resistance losses than the elastic modulus of flexible hose. In order to reduce the resistance losses and improve the efficiency of the deep-ocean mining, Cv and v must be restricted in a suitable range (e.g. 10%-25% and 2.5-4 m/s). Effective buoyancy layout (such as Scheme C and D) should be adopted and the suitable material of moderate E should be used for the flexible hose in deep-ocean mining.
Key words:resistance loss; flexible hose; fluid-solid interaction; deep-ocean mining; finite element method
