Recent trends in fluid mechanics (vol3, issue2) by STM Journals Publication

Recent Trends in Fluid Mechanics (RTFM) May - August 2014

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Recent Trends in Fluid Mechanics Focus and Scope Covers ? Conservation of mass, energy, momentum ? Kinematics of fluid flow ? Dynamics of fluid flow ? Pipe flow system ? Newtonian and non - newtonian fluid ? Flow, Turbulence and Combustion

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Amar Mullick, Professor National Institute of Technology, Durgapur, India.

Anirbid Sircar Director, School of Petroleum Technology Pandit Deendayal Petroleum University Raisan, India.

Ashis Kumar Sen Assistant Professor, Department of Mechanical Engineering, Indian Institute of Technology Madras.

Atul Srivastava Assistant Professor, Indian Institute of Technology, Bombay.

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Pradyumna Ghosh Associate Professor, Thermal Engineering Department of Mechanical Engineering Indian Institute of Technology, BHU(IIT-BHU) Varanasi, India.

Ramesh H Gowda Water Resources Engineering Specialist, National Institute of Technology, Karnataka Suratkhal, India.

Shibu G Pillai Chemical Engineering, Department Institute of Technology Nirma University, India.

Somnath Roy Assistant Profesor, Department of Mechanical Engineering Indian Institute of Technology,Patna.

Vikas Mahto Associate Professor, Department of Petroleum Engineering Indian School of Mines Dhanbad, India.

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STM JOURNALS

I take the privilege to present the print version for the Volume 1 Issue (2) of Recent Trends in Fluid Mechanics. The intension of RTFM is to create an atmosphere that stimulates creativeness, research and growth in the area of fluid mechanics and applications. The development and growth of the mankind is the consequence of brilliant Research done by eminent Scientists and Engineers in every field. RTFM provides an outlet for research findings and reviews in areas of fluid mechanics technology found to be relevant for national and international recent developments & research initiative. The aim and scope of the Journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high level learning, teaching and research in the domain of fluid mechanics research. Finally,I would like to thank Authors for their continued support and invaluable contributions and suggestions in the form of authoring. I express my sincere gratitude and thanks to our Editorial/ Reviewer board for write ups/ reviewing and providing constructive comments for the advancement of the journals. With regards to their due continuous support and co-operation, we have been able to publish quality Research/Reviews findings for our customers base. I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.

Dr. Archana Mehrotra Director STM Journals

Recent Trends in Fluid Mechanics

Contents

1. Effect of Fly Ash on the Rheological and Filtration Properties of Palm Oil-in-Water Emulsion based Drilling Fluid Jain R., Kumar N., Mahto V.

2. Determination of Maximum Allowable Pump Speed for Transferring Fluid to a Vertical Height at Constant Power B. Dan-Asabe, S. A. Yaro, D. S. Yawas, S. Y. Aku

Recent Trends in Fluid Mechanics Volume 1, Issue 2 www.stmjournals.com

Effect of Fly Ash on the Rheological and Filtration Properties of Palm Oil-in-Water Emulsion based Drilling Fluid Jain R., Kumar N., Mahto V.* Department of Petroleum Engineering, Indian School of Mines, Dhanbad, India Abstract The emulsions are considered as most favourable drilling fluid to drill sensitive formations such as shales. In this work, an attempt has been made to develop an emulsion using palm oil. The polymers and surfactant were added to the system to improve the emulsion mud characteristics. It was observed that these emulsions were showing favourable rheological properties and poor filtration control characteristics. But, poor filtration properties were further controlled by fly ash (2% wt/v). The stability of the developed emulsions has been well checked with zeta potential (66.84 to 42.74 mV) measurements. The present study would provide useful information for the selection of eco-friendly palm oil-in water emulsion for drilling oil and gas wells.

Keywords: palm oil, shale, emulsion, interfacial surface tension, zeta potential.

Recent Trends in Fluid Mechanics Volume 1, Issue 2 www.stmjournals.com

Determination of Maximum Allowable Pump Speed for Transferring Fluid to a Vertical Height at Constant Power B. Dan-Asabe1*, S. A. Yaro1, D. S. Yawas2, S. Y. Aku2 1

Shell Chair Office, Department of Mechanical Engineering, Ahmadu Bello University, Zaria, Nigeria 2 Department of Mechanical Engineering, Ahmadu Bello University, Zaria, Nigeria

Abstract This work determines the maximum possible velocity fluids can be transported through a vertical height at constant pump power. The analysis involves simulation of theoretical piping equations and analysis of the pump pressure, frictional pressure drop and static (atmospheric) pressure with respect to flow velocity using MS excel and Matlab. Computational results obtained from MS excel and represented graphically in Matlab establish the maximum allowable velocityâ&#x20AC;&#x201D;below which the fluid can be transported safely within the required flow input conditions (i.e., diameter, length and pump power) and above which it will be impossible for the fluid to be pumped to the given height under the same flow conditions. A general equation was also established for approximate determination of the maximum fluid velocity at any height given the pipe length (height), pump power and pipe diameter. It was also found that at constant pump power, the larger the pipe length and diameter, the greater the maximum allowable flow velocity for each, respectively and vice versa.

Keywords: maximum allowable velocity, pump speed and pressure, frictional pressure, static pressure