Yazar "Ece, MC" seçeneğine göre listele

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    An analysis of free convection to power-law fluids from a vertical plate of variable surface temperature
    (Canadian Soc Mechanical Eng, 2001) Erbas, S; Ece, MC
    Steady free convection laminar boundary-layer flow along a heated vertical plate immersed in a quiescent power-law fluid is investigated. The plate temperature is assumed to have a power-law variation. Similarity solutions are obtained numerically for the boundary-layer velocity and temperature profiles. The effects of flow behaviour index and the generalized Prandtl number on the surface shear stress and heat flux are determined.
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    Buckling and vibration of non-ideal simply supported rectangular isotropic plates
    (Pergamon-Elsevier Science Ltd, 2006) Aydogdu, M; Ece, MC
    Buckling and vibration of a rectangular isotropic plate which has non-ideal simply supported boundary conditions along one of its edges are investigated. It is assumed that one of the edges of the plate allows a small non-zero deflection and a small non-zero moment. Externally applied in-plane loads are considered to be parallel and perpendicular to the edge where non-ideal boundary conditions are present in the buckling problem. Analytical solutions of the buckling and vibration problems are obtained by using the Linshtead-Poincare perturbation technique. Improved buckling loads and natural frequencies are determined for various values of the aspect ratio of the plate. (C) 2005 Elsevier Ltd. All rights reserved.
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    Bulk drying kinetics of multi-layer rough rice
    (Amer Soc Agricultural Engineers, 1995) Cihan, A; Ece, MC; Kahveci, K
    [Abstract Not Available]
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    Buoyancy effects on unsteady laminar and rotationally symmetrical boundary layer
    (Canadian Soc Mechanical Eng, 1999) Öztürk, A; Ece, MC
    Initial development of the laminar boundary-layer flow over an impulsively started translating and spinning isothermal body of revolution ire the case of mixed convection is investigated. Velocity components and temperature are expanded in series in powers of time. Leading and first order functions are obtained analytically and second order functions are determined numerically. The general results are applied to a sphere to investigate the effects of density variations on velocity field and on the onset of separation. The buoyancy force is more effective for small rotational speeds and facilitates the onset of separation for opposing flow and retards it for aiding flow.
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    Centrifugally driven flow and heat transfer in a rotating cylinder uniformly heated from bottom
    (Csme Trans., 2004) Kahveci, K; Ece, MC
    Steady, laminar, centrifugally driven convective heat transfer in a spinning circular cylinder was considered. The governing equations were solved numerically. Aspect ratio, Reynolds and Rayleigh numbers have a significant effect on the velocity and temperature fields.
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    Free convection flow about a cone under mixed thermal boundary conditions and a magnetic field
    (Elsevier Science Inc, 2005) Ece, MC
    A similarity analysis was performed to investigate the laminar free-convection boundary-layer flow in the presence of a transverse magnetic field over a vertical down-pointing cone with mixed thermal boundary conditions. Boundary layer velocity and temperature profiles were determined numerically for various values of the magnetic parameter and the Prandtl number. The results show that the magnetic field suppresses the velocity profiles and increases the skin friction. The temperature profiles were expanded with increasing values of the magnetic parameter resulting in higher surface teinperatures. A transformation relating the similarity solutions of the boundary-layer velocity and temperature profiles associated with different values of the mixed thermal boundary condition parameter was obtained. (c) 2005 Elsevier Inc. All rights reserved.
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    Free convection to power-law fluids from a vertical cone of variable surface temperature
    (Wiley-Blackwell, 2001) Ece, MC
    Steady free convection laminar boundary-layer flow about a heated vertical cone immersed in a quiescent power-law fluid is investigated. Surface temperature is assumed to have a power-law variation with the distance. Similarity solutions are obtained numerically for the boundary-layer velocity and temperature profiles, Magnitudes of the velocity and temperature profiles are found to decrease with increasing values of the flow behaviour index and the surface temperature exponent. The effects of flow behaviour index and the generalized Prandtl number on the surface shear stress and heat flux are determined. Copyright (C) 2001 John Wiley & Sons, Ltd.
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    Free-convection flow about a wedge under mixed thermal boundary conditions and a magnetic field
    (Springer, 2005) Ece, MC
    A similarity analysis was performed to investigate the laminar free-convection boundary-layer flow in the presence of a transverse magnetic field over a wedge with mixed thermal boundary conditions. Boundary-layer velocity and temperature profiles were determined numerically for various values of the Prandtl number and the magnetic parameter. The results show that the magnetic field retards the velocity profiles and increases the skin friction. The temperature profiles were expanded with increasing values of the magnetic parameter resulting in higher surface temperatures. A transformation relating the similarity solutions of the boundary-layer velocity and temperature profiles associated with different values of the mixed thermal boundary condition parameter was obtained.
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    Heat transfer reduction at the separation point on a spinning sphere in mixed convection
    (John Wiley & Sons Ltd, 2002) Öztürk, A; Ece, MC
    The unsteady laminar thermal boundary-layer flow over an impulsively. started translating and spinning isothermal body of revolution in the case of mixed convection is investigated. Velocity components and temperature are obtained as series of functions in powers of time. The general results are applied to a spinning sphere and the development of the surface heat flux evaluated at the separation point as it advances upstream is determined. The surface heat flux evaluated at the separation point as it moves forward decreases due to the increasing magnitude and influence of the centrifugal force and it is augmented by the opposing flow and reduced by the aiding flow. Reduction of the surface heat flux at the separation point is as low as 50 per cent as compared to the heat flux at the front stagnation point. Copyright (C) 2002 John Wiley Sons, Ltd.
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    Liquid diffusion model for drying a stack of rough rice
    (John Wiley & Sons Ltd, 2003) Kahveci, K; Cihan, A; Ece, MC
    Drying of a stack of rough rice was experimentally and theoretically investigated. Stacks of rough rice having different heights were dried with forced convection of warm air. A theoretical model was developed for predicting the bulk drying kinetics of a stack of rough rice using the analytical solution of liquid diffusion equation based on Fick's law. Effective diffusion coefficients were obtained minimizing the sum of squared differences between the theoretical results and experimental data obtained for various drying conditions. Drying air temperature is the most effective factor on the total rate of moisture removal from the stack. The bulk drying rate of a stack of rough rice was considerably reduced as compared to that of a single layer as the height of the stack increased. Agreement between the theoretical and experimental result is very good. Copyright (C) 2003 John Wiley Sons, Ltd.
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    Liquid diffusion model for intermittent drying of rough rice
    (Elsevier Sci Ltd, 2001) Cihan, A; Ece, MC
    Intermittent drying of rough rice grains forming a thin layer was experimentally investigated. An analytical solution of the liquid diffusion equation based on a finite circular cylinder geometry for the rice grain was fitted to the experimental data. The effect of the tempering on the drying rate of rough rice grains was reflected as an increase in the effective diffusion coefficient. The drying rate of the cough rice grains was found to increase with longer tempering periods. (C) 2001 Elsevier Science Ltd. All rights reserved.
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    Similarity solutions for free convection to power-law fluids from a heated vertical plate
    (Pergamon-Elsevier Science Ltd, 2002) Ece, MC; Büyük, E
    Steady, laminar free-convection boundary-layer flow of a power-law fluid over a vertical heated plate under mixed thermal boundary conditions is investigated. A transformation relating the similarity solutions of the boundary-layer velocity and temperature profiles is obtained. (C) 2001 Elsevier Science Ltd. All rights reserved.
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    Unsteady forced convection heat transfer from a translating and spinning body
    (Asme, 1995) Ozturk, A; Ece, MC
    The initial laminar thermal boundary-layer flow past an impulsively started translating and spinning rotational symmetric body of uniform temperature is investigated. Velocity components and temperature are expanded in series in powers of time. Lending and first-order functions are obtained analytically, second and third-order functions are determined numerically. Application of the general results to a sphere shows that the surface heat flux is reduced in the neighborhood of the point of separation and enhanced by the reversed flow inside the separated region.
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    Unsteady laminar boundary layer flow over a spinning body in free convection
    (Canadian Soc Mechanical Eng, 2002) Bayram, M; Ece, MC
    Initial development of the unsteady laminar free-convection boundary-layer flow over an impulsively started spinning isothermal axisymmetrical vertical body is investigated. Stream function, swirl velocity and temperature are obtained in series of functions in powers of time. The general results are applied to a family of downward and upward thickening bodies to investigate the effects of the body shape on the formation of unseparated and separated boundary-layer flow regimes. The onset of flow separation is observed to take place at higher spin rates for downward thickening bodies. The surface heat flux is enhanced by the circulating flow inside the separated region. The series solutions are limited to the small values of the dimensionless time.