30 research outputs found

    RANS Computation of Low Speed Turbulent Flow in Complex Configuration

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    An implicit finite volume algorithm based on the numerical solution of Reynolds Averaged Navier stokes (RANS) equation is presented for prediction of incompressible turbulent flow in and around complex configuration. The algorithm uses boundary-conforming, structured grid, collocated variable arrangement with cartesian velocity components as dependent variables, pressure-velocity solution strategy coupled to different low-diffusive discretisation schemes for evaluation of the convective flux at cell faces, first and second order schemes for temporal discrtetisation and the eddy-viscosity based k -e model with different near wall treatment for turbulence simulation. Capability and limitation of the algorithm are demonstrated through five different application examples of varied complexities

    TEC modeling of disturbed and quiet period

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    18th EISCAT symposium Session E3: Ionoshere/thermosphere/mesosphere May 27 (Sat), Poster Sessionconference objec

    Unusual presentation of generalized macular amyloidosis in a young adult

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    Macular amyloidosis is a common problem seen dermatology out-patient department. Generalized macular amyloidosis presenting with a poikilodermatous appearance is rare. In our case, an 18-year-old male presented with generalized hypopigmented macules with a poikilodermatous appearance of 10-year duration. His developmental milestones were normal with negative family history of similar complaints. Histopathology of hyperpigmented lesions revealed hyperkeratosis and acanthosis of epidermis and hypopigmented lesion showing only hyperkeratosis. Both lesions were showing the deposition of amorphous, hazy material in the tips of papillary dermis with perivascular inflammatory infiltrate. Congo red staining of the amorphous material was positive for amyloid
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