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International Journal of Engineering and Advanced Research Technology

Volume 2 Issue 1 (January 2016)

S.No. Title & Authors Page No View
1

Title : Flow Analysis of Intake Manifold using Computational Fluid Dynamics

Authors : Ch. Indira Priyadarsini

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Abstract :

An inlet manifold or intake manifold is the part of an engine that supplies the fuel/air mixture to the cylinders. The intake manifold is essential for the optimal  performance of an internal combustion engine. The objective of present paper is to predict and analyze the flow through intake manifold of four cylinder spark ignition engine. One of the important factors is air flow inside the intake manifold; the ideal  intake manifold distributes flow evenly to the piston valves. Even distribution is important to optimize the efficiency of the engine. Hence the flow phenomenon inside the intake manifold should be fully optimized to produce more engine power with better combustion and further reduces the emission. Firstly structural analysis has been conducted to set the thickness and material suitability of intake manifold against bursting pressure. Three-dimensional inlet manifold was modeled and numerically analyzed by using the commercially available FLUENT software to study the pressure, velocity and flow characteristics inside the runner. The steady state analysis has been carried out for three different cases: All runners open, 1st & 3rd runners’open and 2 nd & 4th runners open. The predicted results of total pressure loss and total outlet mass flow were discussed. Inlet pipe and plenum connection creates a back step geometry which causes more total pressure loss due to flow recirculation in conventional model. Tapering the geometry is causing more inlet mass flow due to reduction in total pressure loss in the plenum chamber.

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2

Title : Thermoelastic Behavior of Nanoparticulate BN/AA5050 Alloy Metal Matrix Composites

Authors : Chennakesava R Alavala

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Abstract :

The present work was proposed to predict thermoelastic behavior of AA5050/boron nitride nanoparticle metal matrix composites. BN has excellent thermal and chemical stability. The RVE models were used to evaluate thermo-elastic behavior. The stiffness of AA5050/boron nitride nanoparticle metal matrix composites decreased with increases in the loading of BN nanoparticles. The stiffness was raised steeply at 100oC which is very interesting phenomena to be scientifically.  A higher modulus characteristically indicates that the material is harder to deform.

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3

Title : Performance Improvement of Sliding Mode Controller based Indirect Vector Controlled Induction Motor Drive

Authors : Mr. N Subba rao, Dr.K. Satyanarayana, Mr.K.Siva Prasad

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Abstract :

High performance induction motor drives require a better transient and steady state performances. In this paper, an improved Speed and Torque Performances of vector controlled induction motor drive is incorporated with sliding mode controller to improve the overall performance. This Sliding Mode Controller based approach improves the Speed Performance and also reduces the total harmonic distortion. To validate the proposed method numerical simulations have been carried out and compared with the conventional FOC algorithm. The simulation results show that the overall performance of the proposed algorithm is much better when compared to conventional FOC algorithm under different operating conditions.

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4

Title : Effective Municipal Waste Management as a Challenge for Self-Government Municipalities

Authors : Joanna Bril, Edward Rydygier

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Abstract :

The article presents the problems of municipal waste management by local self-governments in Poland. Municipal waste in Poland constitutes a number of problems for the local authorities of both small communities and large municipalities, which force the use of new efficient organizational solutions and the need to make costly investments in infrastructure. Waste management is not only a technical problem, but it is also an area which involves various actors throughout society. The need of application of logistics solutions to the effective management of municipal waste is pointed. As an example of municipal waste management system it was considered the waste management plan for the Capital City of Warsaw. This plan was assessed in terms of respecting the principles of sustainable development and the requirements of the logistics system. Proposals of amendments to the Law on Waste developed by self-government organizations are presented.

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5

Title : Effects of Three Lower Benue Grown Cassava (Manihot esculanta) Varieties and Processes on Seven Quality Indices of Fresh Gari

Authors : Ijabo. O. J., P. K. Igbo

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Abstract :

Three promising cassava varieties, TMS 30572, TMS 90257 and Akpu, were processed into fresh gari and seven of their quality indices studied. The experiment consisted of 3 x 3 two factor randomized Complete Block Design (RCBD) with the three cassava varieties commonly grown in the Lower Benue River Basin as one factor and the other factor the three unit operations of (1) grating (2) dewatering and fermentation and (3) roasting or frying. For the seven indices used methods of determination were moisture content, bulk density and particle size distribution by gravimetric analysis, HCN and swelling capacity by volumetric analysis while water absorbtion capacity was by centrifugal means and pH by meter. Fermentation and dewatering process reduced the HCN content of the fresh peeled and grated tuber to 6.1%, 45.9% and 30.3% in the mash obtained from the three cultivars of TMS 90257, TMS 30572 and Akpu respectively whereas  drying  finally reduced HCN content of the respective three varieties to 1.404 and 1.62 and 1.38 mg of HCN/100 g of dry gari. Since the level of HCN for the three varieties investigated are below 2.0 mg HCN/100 g of dry gari, the gari obtained from them is safe according to SON (2004) Standard. The gari also met SON (2004} Standard in terms of TTA. The bulk densities are 0.6133 ± 0.0053 > 0.5376 ± 0.0004 > 0.5248 ± 0.0047 for TMS 30572, Akpu and TMS 90257 respectively. As for the individuals the values of swelling capacity for TMS 30572 is 400.00 ± 8.89 > Akpu is 379.67 ± 3.21 > TMS 90257 is 314.67 ± 7.09 when tested with ANOVA and means separated. Water absorbing capacity is the same for the three varieties, which is 4.74 ± 0.28. Although the gari fall into the coarse group, most of the grain sizes fall in the range of 1.00 to 1.10 mm. Gari from these three cassava varieties grown in the Lower Benue River Basin meet SON (2004) Standard and should be encouraged except that the grain size should be reduced.

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6

Title : Uniform asymptotical stability of almost periodic solution of a discrete multispecies Lotka-Volterra competition system

Authors : Hui Zhang

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Abstract :

In this paper, we study a discrete multispecies Lotka-Volterra competition system. Assume that the coefficients in the system are almost periodic sequences, we obtain the sufficient conditions for the existence of a unique almost periodic solution which is uniformly asymptotically stable by constructing a suitable Liapunov function. One example together with numerical simulation indicates the feasibility of the main results.

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7

Title : Statistical method based solid state fermentative bioprocess development for the production of polygalacturonase by Rhizopus stolonifer

Authors : Vijayshekhar.C.K, S. Manohar, J. Lalitha

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Abstract :

Wheat bran is one of the major wastes from food processing industries, which poses considerable disposal problems and ultimately leads to environmental pollution. The main objective of the current research work was to determine the significant parameters on the production of industrially important polygalacturonase enzyme from wheat bran. Solid state culture conditions for polygalacturonase production by Rhizopus stolonifer from wheat bran were optimized by Taguchi’s L-18 orthogonal array experimental design methodology. Eight fungal metabolic influencing variables, viz. temperature, moisture, wheat bran, inoculum, pectin, NH4NO3, MgSO4, KH2PO4, and incubation time are used.  The optimum conditions for predicted maximum polygalacturonase production were found to be pH 7, temperature 30 °C and fermentation period of 84 hrs.

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8

Title : Heat Transfer Coefficient from Light-Absorbing Heat-Exchanging Panel to the Heat Transfer in Flat-Plate Solar Collectors and Absorbers for Heating of the Heat Transfer Fluid

Authors : Nilufar Rabbanakulovna Avezova

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Abstract :

In this work a new approach for improvement of existing methods of thermal calculation and testing of flat-plate solar collectors and absorbers for heating the heat transfer fluid [1] is presented. The authors proposed the introduction to the practice of their thermal calculation of heat transfer coefficient from their light-absorbing heat-exchanging panel to the coolant in its heat-removing channels. The mechanism of formation of heat transfer coefficient is studied and proposed formula for its calculation. The insignificant dependence of heat transfer coefficient value on designation of light-absorbing heat-exchanging panel is established.

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