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Article history: Received 20 January 2014 Received in revised form 25 August 2014 Accepted 12 January 2015 Available online 21 January 2015

We give a complete derived equivalence classification of all symmetric algebras of domestic representation type over an algebraically closed field. This completes previous work by R. Bocian and the authors, where in this paper we solve the crucial problem of distinguishing standard and nonstandard algebras up to derived equivalence. Our main tool are generalized Reynolds ideals, introduced by B...

At low Reynolds numbers, laminar-turbulent transition occurs on the suction side of high-lift low-pressure turbine blades. The prediction of this flow is an important step in low-pressure turbine design. Thus the laminar-turbulent transition must be modeled or resolved. The flow around the high-lift low-pressure turbine blade T106C is predicted using RANS simulations, without and with transitio...

One of the most interesting problems in fluid dynamics is the prediction of particleladen turbulent flows. These flows are as diverse as pollutant dispersion in the atmosphere and contaminant transport in industrial applications. An issue of primary importance for moderately dense suspensions concerns how particles affect the turbulent flow itself, the so-called two-way coupling. It is known th...

Parameterizations for bottom shear stress are required to predict sediment resuspension from field observations and within numerical models that do not resolve flow the viscous sublayer. This study assessed three observation-based (τb) parameterizations, including (a) sum of surface wave mean current (quadratic) (); (b) log-law (τb = τL); (c) turbulent kinetic energy τTKE); using 2 years a larg...

Abstract To identify the law of aerodynamic interactions contra-rotating propellers (CRPs) and improve their aerodynamics, this study investigates 4 CRPs (six blades in front six back) with different stage spacings using Reynolds-averaged Navier-Stokes (RANS) equations-based method. The results showed that CRP whose spacing was 0.25 times propeller diameter delivered highest average efficiency ...

Reynolds-averaged Navier-Stokes simulations are still the main method to study complex flows in engineering. However, traditional turbulence models cannot accurately predict flow fields with separations. In such situation, machine learning methods provide an effective way build new data-driven closure models. Nevertheless, a bottleneck that encounter is how ensure stability and convergence of R...

Abstract Computational fluid dynamics analysis of a building plan has been investigated with predominant wind velocity for different directions. The flow properties’ variation in the computational domain modeled by solving Reynolds-Averaged Navier–Stokes (RANS) equations finite volume second-order discretization scheme. turbulence airflow distribution and around Shear Stress Transport (SST) k–ω...

*1 School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan 609-735, Republic of Korea. *2 Department of Naval Architecture and Ocean Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan 609-735, Republic of Korea. *3 Advanced Ship Engineering Research Center (ASERC), Pusan National University, San 30, Jangjeon-dong, G...