Determination of Exponential Smoothing Constant For Demand Forecasting of Milk Product (Paneer) in Chhattisgarh, India

Vol. 3 No. 4

Year: 2013

Issue: Aug-Oct

Title : Determination of Exponential Smoothing Constant For Demand Forecasting of Milk Product (Paneer) in Chhattisgarh, India

Author Name : Pradeep Sahu

Synopsis :

This paper examines the appropriate value of exponential smoothing constant to minimize error for forecasting. Trial and error method is used to determine the optimal value of exponential smoothing constant. Based on literature survey, weekly data collected over October 2011 to October 2012 from Raipur Dugdh Sangh (Devbhog Dairy Industry) in Chhattisgarh. The accuracy of the forecasting method was measured using mean Absolute Deviation (MAD) and mean Square Error (MSE). The value of the smoothing constant that minimize a measure of forecast error like mean Absolute Deviation (MAD) and mean Square Error (MSE) are calculated.

For more details:

imanagerpublications.com

Determination Of Power Of High Pressure Steam Turbine Blading Using Cfd Analysis

Vol. 3 No. 4

Year: 2013

Issue: Aug-Oct

Title : Determination Of Power Of High Pressure Steam Turbine Blading Using Cfd Analysis

Author Name : M. Sivarama Krishnaiah, P. Nanda Kumar, P.S. Ravi Kumar

Synopsis :

In a high pressure Steam Turbine, coupled CFD analysis of steam flow is done, carrying the smaller blade passages, but it is complex and involve understanding of energy conversion in 3D geometries. Out of 17 stages of Steam Turbine, 8 stages of high Pressure Steam Turbine are considered with extended terminal labyrinth seals. Their influence and the effects on performance are analyzed. Design considerations and estimation of power of high Pressure Steam Turbine using CFD, assist in optimizing the design. The CFD results are in concurrence with the two dimensional results. Practical engineering method for obtaining axisymmetric solution has been developed and Results are presented and discussed.

For more details:

imanagerpublications.com

Heat Transfer Enhancement in a Diffuser using Vortex Generators Placed on the Side Wall

Vol. 3 No. 4

Year: 2013

Issue: Aug-Oct

Title : Heat Transfer Enhancement in a Diffuser using Vortex Generators Placed on the Side Wall

Author Name : Ghobad Shafiei Sabet, S. Pavithran , R. R. Kulkarni

Synopsis :

The experimental investigation of heat transfer enhancement and flow analysis in a diffuser using Vortex Generators (Vgs) is carried out. Two diffuser angles are inspected. One and two vortex pairs are considered. The velocity profile at the diffuser inlet is uniform and the flow is a developing one. The Vortex Generators are placed on the side vertical side wall, near the diffuser inlet. It is observed that the heat transfer enhancement is more with the two pair case. The Reynolds 5 number is in the range 2.5-3.6×10 . The maximum enhancement is 83% at constant Reynolds Number and 57% at constant dissipation. The diffuser efficiency is lower for the rough cases, with the two pair case yielding a lower value. The enhancement increases with the angle of attack of the Vortex Generator.

For more details:

imanagerpublications.com

Utilizing Merry-Go-Round Wheel To Pump Water In The Park

Vol. 3 No. 4

Year: 2013

Issue: Aug-Oct

Title : Utilizing Merry-Go-Round Wheel To Pump Water In The Park

Author Name : M. Chandra Sekhar, P. Nanda Kumar, P.S. Ravi Kumar

Synopsis :

Energy conservation is imperative, because the conventional resources are diminishing day by day and the shortage of electric energy will have cascading effect on industrial production and economic development. In this prospective proper utilization of alternative energy sources for the basic needs of living are necessary. In the present research, Pumping of water with playful energy can be enabled even in absence of electrical energy. The paradigm of a “Form Study Prototype” Merry-Go-Round (MGR) pump is conceptually designed. The required artifacts are selected by using cross-consistency matrix. The most of the artifacts are fabricated and the other are obtained directly from the market that are readily available. Then all the distinct components are assembled as per the conceptual design. Performance is evaluated by rotating MGR wheel; so as to enable it to pump the water from sump to over head tank. Thus it can be installed in parks, schools and public places. Thus the playful energy of the children is gently utilized to pump water.

For more details:

imanagerpublications.com

Axisymmetric Thermal Analysis Of Rotor Disc Of A Friction Brake Assembly Using Finite Difference Method

Vol. 3 No. 4

Year: 2013

Issue: Aug-Oct

Title : Axisymmetric Thermal Analysis Of Rotor Disc Of A Friction Brake Assembly Using Finite Difference Method

Author Name : Pushkaraj Bhandari, Abhishek Kanaskar, Ravindra Tamhankar, Uday Phadke

Synopsis :

Aircraft arrester gear (AAG) system, which is a ground based emergency braking system, is used to bring fighter aircrafts to halt by converting kinetic energy of incoming aircraft to frictional heat energy of the emergency brakes. However, the rise in temperature of the brake disc of emergency braking system in an AAG is difficult to measure practically. Hence a mathematical way of estimating temperature rise is discussed. The paper describes temperature rise in the brake disc by solving heat transfer equations with finite difference method. The equations are solved iteratively using MATLAB and the best case temperature rise 3400°C and the worst case temperature rise 1200°Cis obtained based on the area available for heat dissipation. Finite element analysis is done using ABAQUS and ANSYS to validate the temperature rise. Experimentation is also performed by developing a prototype for dynamic energy generation and further its absorption to observe the temperature rise in the brake discs. The theoretical solution is validated with the experimental results. It is concluded that uniform contact of the brake discs is an important parameter to limit the temperature rise.

For more details:

imanagerpublications.com