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Rajendrakumar, S.
- Experimental Investigation of Heat Transfer Study on Plate Fin Heat Exchangers with Wavy Fins
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Authors
Affiliations
1 Department of Mechanical Engineering, SRM University, Kattankulathur - 603203, Kancheepuram District, Tamil Nadu, IN
1 Department of Mechanical Engineering, SRM University, Kattankulathur - 603203, Kancheepuram District, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 37 (2016), Pagination:Abstract
Objectives: This study investigates the variation of heat transfer parameters using wavy fin located in the plate heat exchanger. Methods/Statistical Analysis: Velocity and temperature relations, fanning friction factor for iso-temperature and Colburn factor are evaluated for different flow rates of Reynolds Number from 200 to 2000 and its various fin pitches within 9 mm respectively. Similarities were found between this experimental data and semi empirical correlations of Plate Heat Exchanger. Findings: The various parameters are evaluated using this experimental setup and we obtained the optimum j/f for swirl flow regime with Reynolds Number of around 200 to 210. The general correlations for friction factor and Colburn factor were derived by multiple linear regression analysis. Application/Improvements: This studies show the periodic growth of parameters in the wall region of cross section of cross flow heat exchanger. Also we obtained the higher heat transfer co-efficient by using wavy fin with reasonable pressure fall.Keywords
Correlations, Heat Transfer, Plate Heat Exchangers, Wavy Fins.Full Text
- Frequently used Anisotropic Yield Criteria for Sheet Metal Applications: A Review
Abstract Views :176 |
PDF Views:0
Authors
S. P. Sundar Singh Sivam
1,
V. G. Uma Sekar
1,
K. Saravanan
2,
S. RajendraKumar
1,
P. Karthikeyan
1,
K. Sathiya Moorthy
1
Affiliations
1 Department of Mechanical Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
2 Department of Mechatronics Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
1 Department of Mechanical Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
2 Department of Mechatronics Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 47 (2016), Pagination:Abstract
Objectives: To study the yield behavior and plastic flow of an anisotropic sheet metal during forming operations, various mathematical formulations of the plastic state of the sheet metals have been proposed, known as yield functions. Different yield functions pertain to different criteria and have different characteristics. Methods/Statistical Analysis: There are several yield criteria proposed for the study of yield behaviors of sheet metals. This paper aims at reviewing the most frequently and commonly employed for the purpose yield criteria i.e. Hill 1948, Barlat 1989, Hill 1990 and BBC 2000. The study is focused on discussing the form of each criterion, their implementation details and comparing their predictive accuracies. Findings: The methods followed to obtain the yield surface diagram have been reviewed and discussed. Application/Improvement: Inference has been drawn based upon the agreement between theoretical and experimental value for a particular case.Keywords
Accuracy Index, Anisotropic Coefficients, Yield Criteria.Full Text
- Status of Ground Species Richness, Diversity, Percent Cover and Biomass of Papgani River Basin, a Tributary River of Pennar, Andhra Pradesh, India
Abstract Views :145 |
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Authors
Affiliations
1 Centre for Sustainable Future, Amrita Vishwa Vidyapeetham (Amrita University), Amritanagar P.O., Ettimadai, Coimbatore-641 112, T. N., IN
1 Centre for Sustainable Future, Amrita Vishwa Vidyapeetham (Amrita University), Amritanagar P.O., Ettimadai, Coimbatore-641 112, T. N., IN
Source
Nature Environment and Pollution Technology, Vol 15, No 4 (2016), Pagination: 1143-1152Abstract
In the present study, status of ground plant species of the Papgani river basin was studied. A total of 210 sampling points were selected and nested plots were developed to quantify the herbs and grasses of this region. 156 plant species were recorded with the diversity (H) of 2.33 and density 16 plants/sqm. Biomass of an ecosystem showed 0.90t/ha with a ground cover of 54.32%. The regression analysis was carried out to examine the relationship among density, ground cover and biomass. Relationships of the above said variable was weakened by grazing, frequent fire and human intervention, the hypothetic statement was proved using "t" test. The anthropogenic threads dominate the fast growing unpalatable species like, Cymbopogon and Heteropogon spp. It reduces the productivity and functions of a river ecosystem.Keywords
Papgani, Biomass, Ground Cover, Grazing.Full Text
References
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- Rajendrakumar, S. 2014. Floristic Richness in catchment areas of Papgani River-A tributary of river Pennar, Andhra Pradesh, India. International Journal of Environment, 3(1): 177-204.
- Rajendrakumar, S., Joshi, P.N., Joshua, J., Sunderraj, S.F.W., Kalavathy, S. and Ragunathan, P. 2011. Importance and conservation values of disturbed lands of the North Gujarat Region (NGR), Gujarat, India. Plant Sciences Feed, 1(8): 121-141.
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- Numerical Evaluation and Influence of Product Quality and its defects Measures on the drawing of Stainless Steel Cross Member for Automobiles
Abstract Views :496 |
PDF Views:152
Authors
S. P. Sundar Singh Sivam
1,
Ganesh Babu Loganathan
2,
K. Saravanan
3,
V. G. Umasekar
1,
S. Rajendrakumar
1
Affiliations
1 Dept. of Mech. Engg., SRM Institute of Sci. and Tech., Tamil Nadu, IN
2 Dept. of Mechatronics Engg., ISHIK University, ERBIL, KRG, IQ
3 Dept. of Mechatronics Engg., SRM Institute of Sci. and Tech., Tamil Nadu, IN
1 Dept. of Mech. Engg., SRM Institute of Sci. and Tech., Tamil Nadu, IN
2 Dept. of Mechatronics Engg., ISHIK University, ERBIL, KRG, IQ
3 Dept. of Mechatronics Engg., SRM Institute of Sci. and Tech., Tamil Nadu, IN
Source
International Journal of Vehicle Structures and Systems, Vol 11, No 1 (2019), Pagination: 107-112Abstract
Industrial enterprises increasingly demand optimum quality of products keeping in consideration a strict adherence where forming parameters are concerned. As far as incorporating the vital forming process upon an assortment of materials is concerned, it has grown excruciatingly challenging for industrial enterprises for laying out the adequately precise and suitable parameters. The flaws that are engendered during the process of sheet metal forming are inevitable. Flaws of this nature can be, however, kept within minimal proportions by introducing variations into the process parameters by Trial and Error methodology. This evidently results in a subsequent financial loss, not to mention an irrevocable loss of time and material. Dynaform simulation of defects combined with optimization is carried out with the help of Minitab. This method, as can be conjectured with considerable ease, yields optimum results, for it replaces much to our convenience the need for specialist industrial expertise besides leading to considerable savings in cost, time and material. This study would optimize the SS304sheet metal forming parameters FLD, thickness and thinning with three input parameters, namely, the lower binder force, tool travel velocity and binder close velocity.Keywords
Sheet Metal Forming, Binder Close Velocity, Taguchi Orthogonal Array, Defect Measurements.Full Text
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