Analysis of the Hydrodynamic Effects in Non-connecting Mechanical Seals with a Laser-textured Micro-pore Face
A calculation model is developed for mechanical seals with a laser-textured micro-pore face. The dimensionless hydrodynamic pressure distribution on the seal face at various conditions and micro-pore geometry parameters is obtained from a solution of the Reynolds equation by finite difference method. An optimum micro-pore geometry parameter is found and consistent with experimental results. Results of parametric study demonstrate that substantial hydrodynamic effect can be produced on the seal face with micro-pores.
A device for surface sealing, in particular of landfills, dumps, heaps or the like, with a mineral sealing layer (1) provided with a water-permeable layer (2, 3; 2, 4; 10, 11, 3) is provided, characterized in that the water-permeable layer (2, 3; 2, 4; 10, 11, 3), sealing elements (2; 10), joints (3) and / or gaps (4) are provided between which, the distance is adjusted so that the mineral sealing layer (1) is kept permanently moist.