摘要
应用流体力学、热力学和物理化学的有关定理方程和物理、化学试验数据,通过数值计算的方法建立了增氧气泡在水中的运动、溶解和受力方程;并通过对氧气气泡在水中上升过程中的运动、尺寸、溶解和扩散变化的数值计算和结果分析,优选出在不同条件下可完全溶解的氧气气泡半径范围,获得在水深≤2 m、气泡半径为0.1～ 0.5 mm时的氧气气泡尺寸变化、上升距离和溶解速度之间的关系曲线图,分析了氧气气泡在水中的尺寸、质量和运动的变化规律,确定了计算结果的应用方法,为设计不同水深和溶解氧条件下的最佳溶解气泡的尺寸提供依据.
In order to determine the optimal size of aerating oxygen bubbles in recirculating aquaculture system, a single oxygen buble was investigated numerically during its rising from bottom to water surface. The investigation was analyzed by using fluid dynamic, thermal dynamic and physical-chemical principles and equations. According to the data of numerical calculation, the variations of the bubble in motion, size, and disslution were analyzed. Through optimization, relation curves between water depth and bubble size were obtained for different conditions.
出处
《大连水产学院学报》
CSCD
北大核心
2005年第1期45-50,共6页
Journal of Dalian Fisheries University
基金
国家基础公益类研究项目
关键词
工厂化水产养殖
增氧
氧气气泡
数值计算
recirculating aquaculture
aeration
oxygen bubble
numerical calculation
