Fig. 5: Fluid flow analysis in porous materials.
From: Vertical textile microfluidics: advancing on-garment sweat sampling for real-time biosensing
A Schematics of fluidic channels setup built to estimate the PC. B Photographs of the fluidic setup and the reporting of estimated PC values that each PM generates. Abbreviations: c.a = contact angle. C Spread kinetics of 50 μl of water flowing in 10 × 50 cm closed PM channels. The bold lines are the average values over three measurements and shaded areas are the corresponding standard errors. Inset: spread kinetics of water when flowing in a composite closed channel. D Textile-based closed fluidic channel model used to simulate the water flow. Green and red shaded pipe-like elements represent the woven textile’s threads, the square-section channel stands for the textile pores, and the yellow meniscus represents the water-air interface movement. E Time frames of the simulation taken at 18, 59, and 150 μs. F Fluid imbibition vs. time graph generated from the simulated fluid front. ax-regions correspond to high flow velocity, while bx-regions highlight when the flow slows down due to the resistance caused by the change in the direction of pores.
