Numerical Investigatoin of Three Dimensional Flows in the Airtight Type Display Case with Humidity Control

摘要

The control of the relative humidity in the display case is especially important for the cultural properties to avoid chemical and mechanical damage. In this paper, the transitional relative humidity distribution in the display case are estimated under various conditions by solving three dimensional unsteady Navier-Stokes equations coupled with thermal and humidity transport equations. The results show that the unsteady relative humidity distribution in the airtight type display case is strongly affected by the air flow rate. The main cause of such relative humidity behavior is intensity of convection induced by the air ventilation of the display case.