典型水文条件对气泡运动的影响规律研究

Study on the Influence of Typical Hydrological Conditions to Bubble Motion

本文以认知海洋中普遍存在的气泡上浮过程为目的,通过建立气泡运动、半径、传质传热等微分方程,综合构建了气泡运动的耦合模型,据此结合典型海洋水文条件与海水物性参数的关系,数值模拟获得水文条件对气泡运动的影响规律:(1)盐度、水温、波长、波高是影响气泡的水平偏移和上升时间的主要参数;(2)水温和波高的变化将导致气泡偏离海面预定释放位置;(3)低温气泡上浮时间少于高温气泡。本文有效模拟了水中气泡的上浮过程,为人类认知海水气泡现象,进而为海洋工程、航运安全、海气相互作用等工程实践与理论提供了技术支撑。

Aimed to understand the rising process of bubbles that are common in the ocean, the bubble motion differential equation, radius differential equation, mass transfer and heat transfer differential equation are set up respectively, then the coupling model of bubble motion is built, combination with the relation between typical ocean hydrological conditions and seawater physical parameters, the influence of hydrological conditions on the bubble motion is concluded by the numerical simulation:(1) salinity, water temperature, wave length, wave height are important parameters which affect bubble horizontal migration distance and rise time,(2) the change of water temperature and wave height cause bubble deviate from its intended release position of the sea surface,(3) the rise time of low temperature bubble is less than high temperature bubble. The paper can simulate the floating process of bubble in water effectively, for humans to recognize the sea bubbles phenomenon, and then provides technical support for engineering practices and theories such as marine engineering, shipping safety, and air-sea interaction.