Modeling Thermal Stratification in Aquaculture Ponds

A stratification model was developed for the simulation of the temporal and spatial variation of temperature in aquaculture ponds. A new parameter, called the fish turbulent diffusivity, was incorporated in the equation to calculate the diffusion coefficient in this study. A simple, fast, yet robust numerical method was used to solve the equations of the model. The model, programmed in FORTRAN under the frame of the TRNSYS software, was implemented on a microcomputer. Simulation indicated that the fish turbulent diffusivity was important to the heat transfer estimation in aquaculture ponds. The model was tested using temperatures collected from two ponds in the suburbs of Beijing. The determination coefficient between the calculated and measured temperatures was about 0.90, while the standard deviation was about 0.2°C. The model is useful to better understand the evolution of thermal stratification and the process of heat energy and mass transfers in aquaculture ponds.

Abstract licence: CC BY-NC

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