11 publications
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OCEAN THERMAL ENERGY CONVERSION (OTEC) – A MINIATURE WORKING MODELBy Bh. Nagesh, Bh. Kaumodaki, I.N. Niranjan Kumar
Abstract: Being the student of Andhra University College of Engineering, as a project for the partial fulfillment of B.Tech Degree inMechanical Engineering, a miniature working model of Ocean Thermal Energy Conversion (OTEC) has been preparedwith a cold water pump, a raw water pump and a small turbine and condenser using RANKINE cycle which can generateapproximately 25W electrical power. For getting the cold water at 4 0 C, which is available at …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 3, 2023 · pp. 1–9 Read article →
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Advantages of Having DP Class 3 for Well Stimulation Vessels (WSVS) Compared to Existing DP Class 2 Possibility and Analysis of Failures of DP2 Capable WSVSBy Bh. Nagesh, Jnana Sagar Lokineddi, Rokkala Eunice,V.V.S. Prasad
Abstract: An intervention performed on an oil or gas well to increase production by improving the flow of hydrocarbons from the reservoir into the well bore is well stimulation. The improvements in completion treatmenttechniques like Well stimulation have impacted recovery rates of hydrocarbons such that there is a possibility to pull tens of millions of barrels of oil out of a well, all whilekeeping that well online for 20 years.To perform …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 3, 2020 · pp. 30–45 Read article →
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Design of High Speed Slamming Planing CraftBy T Hadassah, Bh. Nagesh, I.N. Niranjan Kumar
Abstract: This paper chronicles the hypothetical study, test results, design aspects such as stability characteristics, vessel’s high speed performance i.e. short take-off and landing distance, and vertical take-off and landing characteristics, operating at low shallow draft, high speed propulsion efficiency sans cavitation interference, less machinery operating noise, compact hullform & structure, efficient conveyance and applications of High Speed Slamming Planing craft (HSSPC). Amongst High Speed Performance Marine Vessels, this is one …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 2, 2020 · pp. 14–20 Read article →
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Probabilistic and Diagnostic methods to determine the multiple failure mechanisms of HPT 1st stage Marine gas turbine blade.By V.Naga Bhushana Rao, Bh. Nagesh, I.N.Niranjan Kumar
Abstract: AbstractThe failure analysis of high pressure turbine (HPT) blade belonging to 30 MW gas turbine used in marine applications is presented. Before failure, the turbine blade under evaluation was operated for about 10000 hours while its service life was expected to be around 15000 hours. The gas turbine blade was made of Nickel based super alloy and was manufactured by investment casting method. An attempt has been made to analyze …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 2, 2020 · pp. 21–31 Read article →
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Analysis and Design of Berthing Structure for Handling BulkcargoBy Bh. Nagesh, Mr. Amar G. Gaikwada, Dr. KVKRK Patnaik
Abstract: This paper presents basic ideas and terminology of structural optimization of a berthing structure which was analysed and designed using different load conditions and the best possible way to construct a new berthing structure. All the suitable and useful data was adopted from the proposed site location at Belekeri port in Karnataka state and studied carefully before designing the structure. The berth is to be designed for a vessel having …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 1, 2020 · pp. 6–15 Read article →
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Study on the use of limestone on scrubber system and desulfurization of high and low sulphur fuel oils in shipsBy Bh. Nagesh, Mr. Samborta Gongopadhyay, Mr. Aby Joseph, Mr. Tamoghno Banerjee
Abstract: Starting January 2020, the shipping industry will undergo major changes in the way ships are powered for transportation. There will be a Sulphur cap of 0.5% on the use of marine fuel used in ships. The Sulphur cap on shipping fuel came with the world realizing the catastrophic effects of global warming and the melting of the ice caps, with climate change as an inevitable global issue. The purpose of …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 1, 2020 · pp. 16–24 Read article →
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PERFORMANCE AND EMISSION ANALYSIS OF RAPESEED METHYL ESTER BLENDS AS ALTERNATE FUEL FOR DIESEL ENGINE APPLICATIONSBy Bh. Nagesh, Mr. V. Amosua, Prof.(Dr.) S.K. Bhattib
Abstract: Air pollution at sea is due to exhaust emissions from the marine diesel engines of cargo ships, tugs, passenger and patrolling vessels, and motorboats. The emissions from marine engines cause human health hazards like cancer in the lungs, cardio problems, effects the healthy environment, ozone layer depletion and global warming. Rapeseed methyl ester (RME) blends with diesel fuel is one of the best alternate fuels to reduce the exhaust emissions …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 3, 2019 · pp. 14–22 Read article →
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INNOVATIVE AND NOVEL CONCEPT IN RIVER SURFACE CLEANING USING RIVER TRASH SKIMMER OF ZERO EMISSIONS – IT’S IMPLEMENTATION, APPROACH & METHODOLOGYBy Bh. Nagesh, Mr. M Upendra, Ms. T. Hadassah, Prof. (Dr.) I.N. NiranjanKumar
Abstract: With the increase in global plastic pollution in rivers and lakes which is adversely affecting the human and aquatic life. In this paper we present the design and analysis of Zero emission River Trash Cleaner (z-RTC) which is a electrically operated self-propelled floater with trash collecting arms and trash processing plant on the floater. The z-RTC collects the trash and the processing plant on the floater separates the plastic from …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 3, 2019 · pp. 1–8 Read article →
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Use of New Materials for Caisson Type Dry Dock Gates in ShipBuilding and Ship Repair Dry Docks: A Review PaperBy Bh. Nagesh, I. N. Niranjan Kumar, N. Madhu Latha
Abstract: The search for new, more efficient forms of dock gate designs and contemporary trends has led to the construction of increasingly more complex elements including many that still require an economically viable construction system. Caisson type Dry Dock gates need to evolve into a great extent of modernization and to be adapted to the latest technology demands. The use of composite materials could be considered in Dry-Dock gates, particularly in …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 2, 2019 · pp. 9–13 Read article →
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Study on the Failures of Raw Water Tower Structural Joints When the Air Gap of the Jack up Rigs is IncreasedBy Bh. Nagesh, I.N. Niranjan Kumar, N. Madhu Latha
Abstract: 1. ABS Rules for Building and Classing Offshore Installations.2. Guidelines for Site Specific Assessment of Mobile Jack-up Units. SNAME T&R 5-5A.3. ABS. RP-2A, WSD, Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms- Working Stress Design. 21st Edn. Dec 2000; Suppl 1–3.4. Ohta T, Yamauchi H, Toriumi M. Design Method of Leg Structure of Jack-up Rigs. NKK Corporation, Engineering Research Centre, Kawasaki, Japan. 1st International Offshore and Polar Engineering …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 39–48 Read article →
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Study and Checking of Adequacy of Pinion Stiffness for Jacking Systems of Self Elevating Units during the Conversion JobsBy Bh. Nagesh, I.N. Niranjan Kumar, N. Madhu Latha
Abstract: Jacking systems are used to elevate and lower the hull of self-elevating units in the elevated condition and to raise and lower the legs in the floating condition. In one of a conversion job of a Jack-up Rig from MODU to MOPU, which has been considered here as a case study, in which during conversion it has been identified that the inadequacy of the pinion stiffness could be one of …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 18–27 Read article →