Papers

Journal of Ultra Scientist of Physical Sciences - B
Voulume: 24
Issue: 1
Article No. 1
Radiative heat and mass transfer effects on MHD free convective flow past an inclined plate with variable temperature and mass diffusion through porous medium
D. BHANUMATHI*, A.G. VIJAYA KUMAR** and S.V.K. VARMA***

*Research Scholar, Department of Mathematics, S.V.University, Tirupati, A.P. (INDIA)
** Assistant Professor, Department of Mathematics, MVJ College of Engineering, Bangalore, Karnataka (INDIA)
*** Professor, Department of Mathematics, S.V.University, Tirupati, A.P. (INDIA)
Email: agvijaykumar1729@gmail.com, Email: svijayakumarvarma@yahoo.co.in

Abstract :

An analytical study is performed to investigate radiative heat and mass transfer effects on unsteady MHD free convective fluid flow past an inclined plate with variable temperature and mass diffusion through porous medium in the presence of transverse applied magnetic field. The fluid considered here is gray, absorbing/emitting radiation but a non-scattering medium. At time t > 0, the plate temperature and concentration levels near the plate are raised linearly with time t. The governing equations are solved in closed form by the Laplace transform technique. The velocity, temperature, concentration, the rate of heat transfer and the rate of mass transfer are studied through graphs while the numerical values of skin-friction is presented in tabular form for different physical parameters like radiation parameter (R), magnetic field parameter (M), Schmidt parameter (Sc), Prandtl number (Pr), thermal Grashof number (Gr), mass Grashof number (Gm), accelerated parameter (a), inclination parameter () and time (t).

Keyword : MHD, exponential, Accelerated, inclined plate, thermal radiation, Porous medium
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Paper Download Count : 451
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Article No. 2
Some generating functions of modified Jacobi polynomials by Lie algebraic method
P.K. MAITI*1 and A.K. CHONGDAR**

*Department of Physics, Bangabasi Evening College, 19, Rajkumar Chakraborty Sarani, Kolkata,Pin-, W.B. (INDIA)
**Department of Mathematics, Bengal Engineering and Science University, Shibpur, P.O.- Botanic Garden, Howrah, Pin-711 103, W.B. (INDIA)
E-mail: maitiprasantakumar@gmail.com

Abstract :

A good number of generating functions involving Jacobi, modified Jacobi polynomials have been derived by various researchers using Weisner’s group-theoretic method. In this paper, we have studies, a different modification of Jacobi polynomials by the same method of Weisner and obtained some novel results by suitable interpretations of the index, n and the parameter,  simultaneously.

Keyword : Jacobi polynomial, Generating function. AMS-1991 subject classification code: 33A75
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Paper Download Count : 458
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Article No. 3
Mixed Convection Flow from Vertical Plate Embedded in Non-Newtonian Fluid Saturated Non- Darcy Porous Medium with Melting Effect
1B.D.C.N. PRASAD., 2K. HEMALATHA. and 3J. SIVA RAM PRASAD

1Department of Computer applications; P.V.P.Institute of Technology; Vijayawada (INDIA)
2Department of Mathematics; V.R.Siddhartha Engg. College; Vijayawada (INDIA)
3Department of Mathematics; V.R.Siddhartha Engg. College; Vijayawada (INDIA)
Email:- 1bdcnprasad@gmail.com 

Abstract :

We analyzed in this paper the problem of mixed convection along a vertical plate in a non-Newtonian fluid saturated non-Darcy porous medium in the presence of melting and thermal dispersionradiation effects for aiding and opposing external flows. Similarity solution for the governing equations is obtained for the flow equations in steady state. The equations are numerically solved by using Runge-kutta fourth order method coupled with shooting technique. The effects of melting (M), thermal dispersion (D), radiation (R), temperature ratio (Cr), inertia (F), mixed convection (Ra/Pe) and Nusselt number on velocity distribution and temperature are examined for aiding and opposing external flows.

Keyword : Porous medium, Non-Newtonian Fluid, Melting, Thermal Dispersion, Radiation.
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Paper Download Count : 474
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Article No. 4
Mixed Convection Flow from Vertical Plate Embedded in Non-Newtonian Fluid Saturated Non- Darcy Porous Medium with Melting Effect
1B.D.C.N. PRASAD., 2K. HEMALATHA. and 3J. SIVA RAM PRASAD

1Department of Computer applications; P.V.P.Institute of Technology; Vijayawada (INDIA)
2Department of Mathematics; V.R.Siddhartha Engg. College; Vijayawada (INDIA)
3Department of Mathematics; V.R.Siddhartha Engg. College; Vijayawada (INDIA)
Email:- 1bdcnprasad@gmail.com 

Abstract :

We analyzed in this paper the problem of mixed convection along a vertical plate in a non-Newtonian fluid saturated non-Darcy porous medium in the presence of melting and thermal dispersionradiation effects for aiding and opposing external flows. Similarity solution for the governing equations is obtained for the flow equations in steady state. The equations are numerically solved by using Runge-kutta fourth order method coupled with shooting technique. The effects of melting (M), thermal dispersion (D), radiation (R), temperature ratio (Cr), inertia (F), mixed convection (Ra/Pe) and Nusselt number on velocity distribution and temperature are examined for aiding and opposing external flows.

Keyword : Porous medium, Non-Newtonian Fluid, Melting, Thermal Dispersion, Radiation.
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Paper Download Count : 430
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Article No. 5
Investigation of vibrational constants of some metals
R. SINGH1, K. K. VERMA2, D. K. GANGWAR3, D. SINGH4, A. GUPTA5 and L. DIXIT6

1,2,3Department of Applied Science & Humanities, R.I.M.T., Bareilly (INDIA)
4Department. of Physics, S.I.E.M.T., Mathura (INDIA)
5Department of Physics, V.C.T.M., Aligarh (INDIA)
6Scientist, I.I.P.A., Dehradoon (INDIA)
Corresponding Author Email:- rajputrsingh@gmail.com

Abstract :

The vibrational constants namely, force constants, compliance constants, coriolis coupling constants and mean amplitudes of vibration have been computed for the octahedral hexa-halogeno anions of 8-10 groups belonging 3d, 4d and 5d series of transition metals using latest vibrational wave numbers. Three modified force fields such as GVFF, MUBFF and MOVFF but we are selected one of them GVFF to compute the force constants. In addition to this compliance constants have been evaluated using the force constants. The mean amplitudes of vibrations are investigated at three temperatures. The trends among the force constants are examined and the results are logically discussed and some useful conclusions are drawn.

Keyword : vibrational constants, MUBFF and MOVFF, GVFF
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Paper Download Count : 475
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Article No. 6
Shape optimisation and power prediction of horizontal axis wind turbine blades
ARVIND SINGH RATHORE1 and SIRAJ AHMED2

1Department of Mechanical Engineering Maulana Azad National Institute of Technology, Bhopal (INDIA)
2Department of Mechanical Engineering Maulana Azad National Institute of Technology, Bhopal (INDIA)

Abstract :

This paper presents an optimization model for rotor blades of horizontal axis wind turbines. The model refers to a design method based on blade element momentum (BEM) theory is explained for power prediction of horizontal-axis wind turbine (HAWT). The method is used to optimize the chord and twist distributions of the blades. Power predicted by this method validate with 750 KW Global Wind Power turbine. Also a computer program is written to estimate the aerodynamic performance of the existing HAWT blades and used for the performance analysis of the designed 750 KW HAWT rotor.

Keyword : Blade Element Momentum Theory, Aerodynamics, Optimal Design and Aerofoil S809
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Paper Download Count : 776
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Article No. 7
Spectroscopic investigation of the reaction product of tetrathiazyldihydrofluoride (S4N4H2F2) with Hg (II) Chloride
H.K. SHARMA

Department of Chemistry, JNRM, Port Blair - 744104 (A&N Islands)
e.mail: himanshusharma014@gmail.com

Abstract :

The reaction of tetrathiazyldihydrofluoride (S4N4H2F2) with HgCl2 was carried out in organic medium. The product obtained was characterized on the basis of IR, UV, EPR, Mass and 1HNMR spectra and is formulated as [S3N4H2F2HgCl]x where x = 3.28

Keyword : Tetrathiazyldihydrofluoride, N-coordinated complex, hydrogenbonding.
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Paper Download Count : 510
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Article No. 8
Testing faults in embedded system application
NEELESH JAIN1 and ASHISH VERMA2

1Research Scholar, Department of Computer Science and Application
2Assistant Professor, Department of Physics and Electronics Dr. Hari Singh Gour Central Vishwavidyalaya Saugor M.P. (INDIA)
Email:- neelsgr@rediffmail.com

Abstract :

In this paper we have presented an approach of testing faults in embedded system application software. Faults occur when application software communicates with the underlying components of the system. We have introduced two methods which involves dataflow analysis to identify intra-task communication and inter-task communication between specific layers in embedded systems and between software components within those layers.

Keyword : Embedded System Testing, Faults
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Paper Download Count : 492
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Article No. 9
Analysis of soil erosion pattern due to human intervention in the watersheds of Tungabhadra sub-basin
VARUNA, M.1, RAJESH GOPINATH 2 and FATHIMA SAMANA, S.2

1Assistant Professor, Department of Civil Engineering, RVCE, Bangalore (INDIA)
2Assistant Professor, Department of Civil Engineering, AcIT, Bangalore (INDIA)

Abstract :

Soil erosion is a gradual process occurring due to the natural forces of wind, rainfall and surface run-off. Lately, its rate has accelerated due to human intervention. The current study is aimed at analyzing the soil erosion pattern for three watersheds of Tungabhadra sub-basin, namely Kumudavathi, Meruru2 and Meruru4. To achieve the objective,
the research envisaged the physical characteristics of the watersheds by Morphometric analysis. Also, the Drainage Maps and Contour maps were prepared with the aid of Topographic maps obtained from the 'Survey of India' and 'Watershed Atlas'. Finally, soil erosion was determined by the 'Universal Soil Loss Equation'. The analysis has revealed a startling annual potential soil loss of 20.16, 46.08 and 32.90 tonnes/hectare for the aforementioned watersheds, respectively. The loss was found maximum in Meruru2, as the watershed was subjected to tremendous deforestation
and mining activities being highly prevalent in Bellary region. Also, the loss in other 2 watersheds can be attributed to the makeover of the inherent land-use patterns to urbanization, industrialization, agricultural practices etc. The control measures apart from being sustainable, also need to focus on afforestation and preservation of tree cover mainly
along the steep contour of the terrain.

Keyword : erosion, soil, deforestation, Tungabhadra, land-use.
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Paper Download Count : 507
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Article No. 10
Study of wave train events of cosmic rays on different phases of solar cycles 22 & 23
PRAVEEN KUMAR VISHWAKARMAa, SARVESH VISHWAKARMAa, AVNISH SHRIVASTAVAa and ANIL KUMAR TIWARIb

aDepartment of Physics, A.P.S. University, Rewa (M.P.) 486003 (INDIA)
bDepartment of Physics and Comp. Science, Govt. T.R.S. College, Rewa (M.P.) 486001 (INDIA)
E-mail: praveentrs@gmail.com

Abstract :

The average characteristics of diurnal variation have been found to vary with solar cycle different phases, where the variation is much larger at higher energies. A number of investigators have reported short as well as long term characteristics of the daily variation, To observe the impact of solar cycle variations (22 and 23) on high as well as low amplitude wave train events (LDW and HDW), the events were classified on the basis of different phases of solar cycles, i.e. the minimum solar activity time period, the maximum solar activity time period, the declining phase of solar cycle. It was observed that low amplitude wave train events are dominant in every phase of solar cycle except in the time period of maximum solar activity time period, where the high amplitude diurnal wave train events are dominant. In the minimum solar activity time period only low amplitude wave train events are observed in both solar cycles.

Keyword : cosmic rays, solar cycles, wave train events
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Paper Download Count : 476
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