Qualification: 
Ph.D, M.E
k_balaji@cb.amrita.edu

Dr. Balaji K. currently serves as Assistant Professor at Department of Mechanical Engineering, School of Engineering, Coimbatore Campus. He has a total of 16 years of academic and research experience in Thermal Science. He has been teaching various subjects in thermal sciences, viz.,

  • Thermodynamics
  • Fluid Mechanics
  • Heat Power Engineering
  • Heat Transfer
  • Advanced Fluid Mechanics
  • Gas Dynamics and Jet Propulsions 

Dr. Balaji completed his Ph. D. in August 2017 (Thesis title: Experimental Studies of Sprays Generated by Twin-fluid Atomizer Utilizing Active Control Strategy under Ambient Condition. Department of Aerospace Engineering, Amrita Vishwa Vidyapeetham, Coimbatore)

Area of Interest

  • Atomization and Sprays [Experimental characterization of primary and secondary breakup processes of liquid column utilizing passive and active control strategy].
  • Exergy Analysis [Exergy studies of all fields in Engineering, Science, and Medicine with a diverse coverage].

University Representative

  • Remote centre Coordinator for eOutreach Program conducted by IIT Bombay and Kharagpur sponsored by MHRD.

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2018

Journal Article

Balaji K., Dr. Sivadas V., Radhakrishna, V., A.B., K., and Saicharan, K., “Experimental Characterization of Intrinsic Properties Associated with Air-Assisted Liquid Jet and Liquid Sheet ”, Journal of Fluids Engineering, Transactions of the American Society of Mechanical Engineers (ASME), vol. 140, no. 5, pp. 051301/1-9 , 2018.[Abstract]


The present study focuses on experimental characterization of interfacial instability pertinent to liquid jet and liquid sheet in the first wind-induced zone. To accomplish this objective, the interfacial wave growth rate, critical wave number, and breakup frequency associated with air-assisted atomizer systems were extracted by utilizing high-speed flow visualization techniques. For a range of liquid to gas velocities tested, nondimensionalization with appropriate variables generates the corresponding correlation functions. These functions enable to make an effective comparison between interfacial wave developments for liquid jet and sheet configurations. It exhibits liquid sheets superiority over liquid jets in the breakup processes leading to efficient atomization.

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2016

Journal Article

Dr. Sivadas V., Balaji K., Sampathkumar, Mc, Hassan, M. Md, Karthik, K. Me, and Saidileep, Kb, “Empirical Correlation of the Primary Stability Variable of Liquid Jet and Liquid Sheet under Acoustic Field”, Journal of Fluids Engineering, Transactions of the ASME, vol. 138, 2016.[Abstract]


The investigation focuses on optimizing the length of wind-pipe that transmits acoustic energy from the compression driver to the cavity of twin-fluid atomizers. To accomplish this objective, the primary variable of stability, that is, the breakup length of liquid jet and sheet under acoustic perturbations has been experimentally characterized for a range of wind-pipe length and liquid velocity. The analysis considers liquid phase Weber number in the range of 0.7-8, and the results are compared with primary breakup data without acoustic perturbations. The range of Weber number tested belongs to Rayleigh breakup zone, so that inertia force is negligible compared to surface tension force. It shows the existence of unique stability functions based on dimensionless products up to an optimum wind-pipe length, which extends greater for liquid sheet configuration. The present results may find relevance in atomizer design that utilizes acoustic source to enhance liquid column breakup processes. More »»

2015

Journal Article

B. M. M. S. R. S., Dr. Ratna Kishore V., Dr. Anbuudayasankar S. P., and Balaji K., “Power generation by high head water in a building using micro hydro turbine—a greener approach”, Environmental Science and Pollution Research, 2015.[Abstract]


Demand for green energy production is arising all over the world. A lot of emphasis is laid in making the buildings green. Even a small amount of energy savings made contribute to saving the environment. In this study, an idea is proposed and studied to extract power from the high head water in the pipelines of a building. A building of height 15 m is considered for this study. Water flowing in the pipe has sufficient energy to run a micro hydro turbine. The feasibility of producing electrical energy from the energy of pipe water is found. The motivation is to find the feasibility of generating power using a low-cost turbine. The experimental setup consists of micro turbine of 135 mm diameter coupled to a 12-V DC generator; LEDs and resistors are employed to validate the results. The theoretical calculations were presented using the fundamental equations of fluid mechanics. The theoretical results are validated using experimental and numerical results using CFD simulation. In addition, exergy analysis has been carried out to quantify the irreversibilities during the process in the system. © 2015 Springer-Verlag Berlin Heidelberg

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2013

Journal Article

V. Sivadas, Balaji K., I. Raj, K., Vignesh, E., and Aravind, R., “Area void fraction associated with twin-fluid atomizer”, Atomization and Sprays, vol. 23, pp. 663-676, 2013.[Abstract]


An empirical characterization of the void fraction in the spray region of liquid jets emanating from a twin-fluid atomizer has been carried out. The present study evolves under primary breakup criteria. That is, the respective breakup length extracted from flow visualization techniques are successfully utilized to find a better functional correlation for the area void fraction with longitudinal distance. The resultant function enables extracting the axial location at which complete atomization occurs for the range of conditions tested. To make the analysis more appealing in the practical domain, the concept of effective jet diameter and associated stretching factor at the nozzle exit plane were introduced. Hence, the validity of results will not be limited to the present test conditions. © 2013 by Begell House, Inc.

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