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Visakhapatnam Andhra Pradesh, India

King P.,Andhra University | Prasad V.S.R.K.,Anil Neerukonda Institute of Technology and science ANITS
International Journal of Fluid Mechanics Research

A mathematical equation was developed, based on macroscopic balances, for efflux time during gravity draining of a Newtonian liquid from a large cylindrical tank through two-exit pipes located at the bottom of the tank, the flow in each of the pipes being turbulent. The equation was verified with the experimental data. Efflux time comparisons were also made with that of single exit pipe system both in the absence and presence of polymer additions to arrive at the minimum time required for draining contents of the storage vessel. Further, the effect of polymer additions on efflux time for two-exit pipe system was also carried out. The extent of increase in Froude number on the addition of water-soluble polymer was also established. © 2010 Begell House, Inc. Source

Imandi S.B.,Andhra University | Imandi S.B.,Anil Neerukonda Institute of Technology and science ANITS | Karanam S.K.,Andhra University | Garapati H.R.,Andhra University | Garapati H.R.,Anil Neerukonda Institute of Technology and science ANITS
Journal of Microbial and Biochemical Technology

The production of extra cellular lipase in Solid State Fermentation (SSF) using Yarrowia lipolytica NCIM 3589 with Niger seed oil cake (Guizotia abyssinica) has been made. Different parameters such as incubation time, inoculum level, initial moisture content, carbon level and nitrogen level of the medium were optimized. Screening of various process variables has been accomplished with the help of Plackett-Burman design. The maximum lipase activity of 26.42 units per gram of dry fermented substrate (U /gds) was observed with the substrate of Niger seed oil cake in four days of fermentation. STATISTICA 6.0 was used for implementing Plackett-Burman design. © 2010 Imandi SB, et al. Source

Narayana K.S.,Anil Neerukonda Institute of Technology and science ANITS | Naik R.T.,Indian Institute of Science | Mouli R.C.,Anil Neerukonda Institute of Technology and science ANITS | Naik R.T.B.,National Geophysical Research Institute
International Journal of Manufacturing, Materials, and Mechanical Engineering

The work presents the Finite element study of the effect of elliptical chords on the static and dynamic strength of tubular T-joints using ANSYS. Two different geometry configurations of the T-joints have been used, namely Type-1 and Type-2. An elastic analysis has been considered. The Static loading conditions used are: axial load, compressive load, In-plane bending (IPB) and Out-plane bending (OPB). The natural frequencies analysis (dynamic loading condition) has also been carried out. The geometry configurations of the T-joints have been used, vertical tubes are called brace and horizontal tubes are called chords. The joint consists of brace joined perpendicular to the circular chord. In this case the ends of the chord are held fixed. The material used is mild steel. Using ANSYS, finite element modeling and analysis of T-joint has been done under the aforementioned loading cases. It is one of the most powerful methods in use but in many cases it is an expensive analysis especially due to elastic-plastic and creep problems. Usually, three dimensional solid elements or shell elements or the combination of two types of elements are used for generating the tubular joints mesh. In tubular joints, usually the fluid induced vibrations cause the joint to fail under resonance. Therefore the natural frequencies analysis is also an important issue here. Generally the empirical results are required as guide or comparison tool for finite element investigation. It is an effective way to obtain confidence in the results derived. Shell elements have been used to model the assembled geometry. Finite element ANSYS results have been validated with the LUSAS FEA and experimental results, that is within the experimentation error limit of ten percentage. Copyright © 2013, IGI Global. Source

Ramesh Raja Babu P.,Anil Neerukonda Institute of Technology and science ANITS | Nirmala M.,Anil Neerukonda Institute of Technology and science ANITS
Lecture Notes in Electrical Engineering

An efficient double band with single feed GPS frequencies 1.22760 GHz (L2) and 1.57542 GHz (L1) such as Surveying, Mapping and Geo informatics. By trimming opposite sides of two different pair of square and isosceles corners of square patch in dielectric substrates, stacked patch antennae for double band operations are obtained. Both the upper and lower patches have 2 pairs of square and isosceles truncated corners each. The inculcation of corner truncation has achieved better return loss and gain at L1, L2 bands. A concise antenna is designed and simulated using IE3D simulation tool. © Springer India 2016. Source

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