Journal Vol – 11 No – 1 July 2016

PULSATILE FLOW OF BLOOD IN AN ELASTIC TUBE WITH SLIP AT THE WALL

Authors:

Malay Kumar Sanyal,

DOI NO:

https://doi.org/10.26782/jmcms.2016.07.00001

Abstract:

Pulsatileflowof bloodin an elastic circular tubewith slip at the permeablewallsis investigatedin the present analysis solutionsfor axial and radial velocityhas constructed. Thevolumetricrate of blood flow also measured in the axialdirection.The expression for flow characteristic, velocity profile are obtained.Numerical results are shown in tabular form.The effect of slip velocity,size of theartery,viscosityon the flow are shown graphically and discussed briefly.

Keywords:

Refference:

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II.Kathleen Wilkie Human blood flow2003

III.An Introduction to Mathematical Physiology & Biology,Cambridge University Press,P.J. MAJUMDER1999

IV.Mathematical Biology J . D . Murray Springer 3rd. EditionP.1471532004

V.MHD Steady flow in a channel .With slip at the permeableBoundariesOld Makinde , E. OsalusiRom. Journ.Phys. Vol 51P319-328, Bucharest2006

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AN APPROACH TO IMPROVE THE PERFORMANCE OF A POSITION CONTROL DC MOTOR BY USING DIGITAL CONTROL SYSTEM

Authors:

Md. Salauddin Khan,Masudul Islam,Md. Rasel Kabir,Lasker Ershad Ali,

DOI NO:

https://doi.org/10.26782/jmcms.2016.07.00002

Abstract:

Bangladesh bureau of statistics (BBS) publish a statistical year book in every year where comprehensive and systematic summary of basic statistical information of Bangladesh covering wide range of fields. BBS also forecast different sectors such aseconomics, weather, agriculture etc in different time in this country. In this paper wemainly concern on the wheat, rice and maize foodgrain which plays a vital role ineconomic development of Bangladesh. The main purposes of this paper as to comparewhich techniques are better BBS’s or statistical techniques for forecasting. There aredifferent forecasting models are available in statistics among these we used Auto regressive (AR), Moving Average(MA), Autoregressive Moving Average (ARMA)and Auto regressive Integrated Moving Average (ARIMA) models. For this reason, weclarify the stationary and non-stationary series by graphical method. On the basis of that,the stationary model is being set up asthe forecasting purpose. After analyze, we compare the forecasting result of our selective foodgrain and find that forecasted valuesusing statistical techniques are nearest to the actual values compare to BBS’s project edvalues.

Keywords:

ARIMA,ARMA,Forecast,Foodgrain,

Refference:

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VI.Clements, M. and Hendry, D. (1998),Forecasting Economic Time Series,United UniversityPress, Cambridge.

VII. Deepak, P., et al. (2015), A Comparison of forecasting methods: Fundamentals,Polling, Prediction Markets, and Experts,A Journal of Prediction Markets,Vol.23, No.2, pp.1-31.

VIII. Diebold, F. (2004),Elements of Forecasting, 3rded. Thomsos sourth-westrn,India.

IX. Ediger, S.A, (2006),ARIMAForecasting of Primary Energy Demand by Fuel inTurkey,Energypolicy, Vol. 35, pp.1-8.

X. Gouriroux, C. and Monfort, A. (1997),Time Series and Dynammic Models,Giampiero,M.Gallo Cambridge.

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XII. Hannan, E.J. (1994),Multiple Time Series,New York: John Wiley & Sons Inc.

XIII. Kumar, et al. (2009),Surface flux modelingusing ARIMA technique in humansubtropicalmonsoon area,Journal of Atmospheric and Solar-TerrestrialPhysics. Vol. 71, pp. 1293-1298.

XIV. Lloret, et al. (2000),Time Series Modeling of Landings in NorthMediterranean Sea,ICESJournal of Marine Science: Journal du Conseil. Vol.57, pp. 171-184.

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XVI. Mucuk, M. and Uysal, D. (2009),Turkey’s Energy Demand,Current ResearchJournal of SocialSciences, Vol.1(3), pp. 123-128.

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MAGNETO-HYDRODYNAMIC FORCED CONVECTIVE BOUNDARY LAYER FLOW PAST A STRETCHING / SHRINKING SHEET

Authors:

Mohammad Wahiduzzaman,Runu Biswas,Md. Eaqub Ali,

DOI NO:

https://doi.org/10.26782/jmcms.2016.07.00003

Abstract:

MHD boundary layer forced convection flow along a shrinking surface withvariable heat and mass flux in the presence of heat source is studied. The flow isproducedowing to linear shrinking of the sheet and is influenced by uniform transversemagnetic field. The boundary layer partial differential equations of momentum, heat andmass transfer equations are converted into nonlinear ordinary differential equations bysimilarity transformation. Numerical solution of the resulting boundary value problem isobtained using Nachtsheim-Swigert Shooting iteration scheme along with the sixth orderRunge-Kutta method. The effects of different parameter on velocity, temperature andconcentration are shown graphically. Skin friction coefficient, Nusselt number andSherwood number are also for different values of the parameter are also involved in thestudy.

Keywords:

,

Refference:

I.Chen, C.K. and Char, M.I (1988),“Heat transfer of a continuously stretchingsurface with suction and blowing”,Journal of Mathematical Analysis andApplications135[2], 568-580.

II.Ali, M.E. (1995), “Thermal boundary layer on a power-law stretched surfacewith suction or injection”,International Journal of Heat and Fluid Flow16[4], 280-290.

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IV.Liao, S.J. (2005), “A new branch of solution of boundary layer flows over apermeable stretching plate”,International Journal of Heat and Mass Transfer48[12], 2529-2539.

V.Bhargava, R. Sharma, S. Takhar, H.S. and Bhargava, P (2007), “Numericalsolutions for Micropolar transport phenomena over nonlinear stretchingsheet”,Nonlinear Analysis: Modeling and Control12[1], 45-63.

VI.Khedr, M.E., Chamka, A.J. and Bayomi, M. (2009), “MHD flow of amicropolar fluid past a stretched permeable surface with heat generation orabsorption”,Nonlinear Analysis: Modeling and Control14[1], 27-40.

VII.S. P. Anjali Devi and J. W. S. Raj (2014), “Numerical Simulation of Magneto-hydrodynamic Forced Convective Boundary Layer Flow past aStretching/Shrinking Sheet Prescribed with Variable Heat Flux in thePresence of Heat Source and Constant Suction ”,Journal of Applied FluidMechanics,7[3], 415-423, 2014.

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DEFORMATION OF AN INFINITE DIELECTRIC MEDIUM WITH A HOLE IN THE SHAPE OF PASCAL LIMACON

Authors:

D.C. Sanyal,

DOI NO:

https://doi.org/10.26782/jmcms.2016.07.00004

Abstract:

A two dimensional problem of electrostriction with a hole in the of Pascal’s limacon is solvcd by complwx variable method. The distributions of stresses in an infinite dielection plate when the hole is filled up by air is subjected to an electric filed unifrom at infinity as well as it is acted on by appiled two dimensional tractions at infinity. The hoop stress is calculated on the boundary of the hole.

Keywords:

,

Refference:

I. Stratton, J.D.: Electromagnetic Theory, Mc Graw- Hill, new York (1941).

II. Landau, L.D. Electrodynamics of continuous Media Addision Wesley (1960).

III. Knops, R.J. Quart Jour. Math. Vol.16(1963) p.377.

IV. Maikap G.H. and Sengupta, P.R. Acta Cien. Ind. Vol.17(1991) p.498.

 

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