variavel0=<b>Marco Túlio C. Faria</b> - mtfaria@dedalus.lcc.ufmg.br Universidade Federal de Minas Gerais
<b>Abstract.</b> A finite element analysis is carried out to investigate the behavior of gas lubricated herringbone groove journal bearings operating at high speeds. A special finite element procedure, based on the Galerkin weighted residual method with a new class of high-order shape functions, is implemented to solve the Reynolds equation for compressible fluids in journal bearings. A linearized perturbation procedure is performed on the Reynolds equation to render the zeroth- and first-order lubrication equations for grooved journal bearings. These zeroth- and first-order lubrication equations permit the prediction of some bearing static and dynamic performance characteristics, such as load capacity and dynamic force coefficients. Curves of performance characteristics show the influence of high speeds on the behavior of gas grooved journal bearings.
<b>Keywords.</b> Gas Bearings, journal bearings, herringbone grooves, grooved bearings, upwind techniques.