In the present study, a numerical analysis of the laminar incompressible flow through an open subsonic wind tunnel is conducted in order to determine the flow quality within the test section. In sum, the developed correlations and model present themselves as invaluable tools to facilitate improved design and engineering of SDHED systems. The removed latent energy can be enhanced from 3.9 kW to 8.5 kW when δd/δf and H/L are reduced to 0.1 and 0.04, respectively. The results also indicate that the design parameters, H/L and δd/δf, have significant effects on both latent effectiveness and removed latent energy performance of the SDHED. Thirdly, new correlations are established to predict the dehumidifier’s outlet humidity and temperature with R2 = 0.965. Two dimensionless variables, δd/δf and β, are found to significantly impact the product air’s properties. Secondly, a DASA is conducted to identify key dimensionless parameters. Firstly, a theoretical model is developed based on the fundamental principles and experimentally validated by employing a SDHED system prototype. Therefore, this paper employs dimensional and scaling analysis (DASA) to unravel the key underlying relationships, leading to improved prediction and optimization of the SDHED’s performance. The evolution of an in-depth understanding and accurate prediction of the dehumidification performance of a solid desiccant coated heat exchanger dehumidifier (SDHED) is severely limited by the unbalanced and unidentified relationships between the product air's thermal conditions and the combined effect of the geometrical parameters under varying operating conditions. The results indicate the reduction of flow separation, hence more uniform flow in the tunnel, by applying screen or mesh at the WAD and by applying honeycomb in the chamber. Unstructured mesh type, generated by Hexpress, was used on the tunnel computational domain. The CFD simulation was performed using Numeca by separating the domain into fluid domain section (for the tunnel section) and porous media domain (for the screen and honeycomb section). In the modelization, the applied screen or mesh and honeycomb were modeled using porous media computational model and using Darcy law as a mathematical model. Honeycomb was applied after the last screen in the tunnel duct. ![]() at the inlet, middle section, and at the outlet of the WAD. The screen was applied on the several locations at the WAD (wide angle diffuser), i.e. This paper discusses about the effect of applying screen and honeycomb to the flow characteristic in a simple tunnel model. Applying flow conditioner like screen or mesh and honeycomb is commonly used to improve the flow quality in the tunnel. design of the corner vane, corner duct, contraction duct and etc.). ![]() There are several aspects that affect the flow quality, such as blade design, flow conditioner application and tunnel circuit configuration (i.e. In the field of wind tunnel testing, flow quality is one of considerations which determine the accuracy of data measurement.
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