Oscillatory mixed convective heat and mass transfer boundary layer flow on a vertical plate in a dehumidifying surrounding

The present study is concerned with the convective heat transfer impact on climate change by considering the dehumidification features. For this purpose, unsteady two-dimensional viscous incompressible fluid flow along a flat vertical plate is considered. Keeping in view the title of the project and the coordinate system, a mathematical model based on the laws of conservation is formulated. The coupled nonlinear partial differential equations are converted into a non-dimensional model by using appropriate dimensionless variables. The numerical solution for the dimensionless model has been obtained by applying an efficient technique, the finite difference method. The effects of various parameters, i.e., pressure gradient α, thermal and concentration Peclet numbers PeT and PeC, mixed convection parameters λT and λC, and Reynolds number Re on oscillatory convective heat transfer in dehumid air are calculated and presented graphically and in tabular form. The results reveal that Reynolds number and mixed convection parameter λT primarily enhance the fluid velocity and skin friction but declines the temperature and species concentration and transport. It is also noted that solutal Péclet number PeC along with the pressure gradient α increases the transient skin friction and heat transient but declined the mass transport. The interplay of these parameters reveals strong interactions between oscillatory flow, heat transfer, and dehumidification. This analysis has significant applications in dehumidification systems such as cooling towers, industrial drying processes, moisture removal in agriculture storage, indoor climate control, and building energy efficiency.