Katta Ramesh
@university.sunway.edu.my
Senior Lecturer, School of Mathematical Sciences
Sunway University
RESEARCH INTERESTS
CFD, Heat and Mass Transfer, Nanofluids
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
J. Prakash, K. Ramesh, D. Tripathi, and R. Kumar
Elsevier BV
Mubbashar Nazeer, Farooq Hussain, Sadia Iftikhar, Muhammad Ijaz Khan, K. Ramesh, Nasir Shehzad, Afifa Baig, Seifedine Kadry, and Yu‐Ming Chu
Wiley
Shafqat Hussain, Prakash Jayavel, Bander Almutairi, and Katta Ramesh
Elsevier BV
Liaquat Ali Lund, Mustafa Abbas Fadhel, J. Prakash, M. Dhange, Anjali Verma, and K. Ramesh
Springer Science and Business Media LLC
H. Ashraf, Nehad Ali Shah, Misbah Shahzadi, Hamood Ur Rehman, Amjad Ali, M. Dinesh Kumar, C. S. K. Raju, Abdelaziz Mennouni, Noor Muhammad, Abderrahim Wakif,et al.
World Scientific Pub Co Pte Ltd
Understanding the film lifting and draining of fluid on a vertical belt with surface tension is crucial for improving predictive models in coating and lubrication processes. This paper presents a theoretical study on the film lifting and drainage of a third-grade fluid with surface tension. The driving mechanisms on a vertical belt are the belt’s upward movement, the gradient of surface tension, and gravity. The formulated nonlinear ordinary differential equation (ODE) is solved for a series-form solution using the Adomian decomposition method. Numerical computations are used to determine the stationary point placements and the thickness of the uniform film. The study elucidated that lift velocity shows a decreasing trend, while drainage velocity exhibits an increasing trend with increasing values of inverse capillary number C and Stokes number [Formula: see text]. The lift velocity shows an increase, whereas the drainage velocity demonstrates a decrease with an increase in the Deborah number De. With increasing values of [Formula: see text] and C, the stationary points shift away from the fluid–air interface, while an increase in De causes them to move towards the interface. Surface tension plays a role in supporting drainage and leads to a shift in the stationary points towards the belt. Newtonian and third-grade fluids are also compared in terms of velocity, stationary points, uniform film, and surface tension, providing insight into their behavior.
M. Gnaneswara Reddy, K. Bhagya Swetha Latha, Anjali Verma, and Katta Ramesh
World Scientific Pub Co Pte Ltd
This study delves into the exploration of hybrid nanofluids within the context of a stretching cylinder, a domain that has captivated numerous researchers owing to its pivotal applications in industrial manufacturing processes, particularly in metal forming and stretch dies. The authors, recognizing the significance of these applications, have introduced a novel heat transfer fluid termed hybrid nanofluid, comprising molybdenum disulfide and carbon nanotubes suspended in the base liquid, water. The investigation focuses on the flow of the hybrid nanofluid within a stretching cylinder, considering various influential factors such as Joule heating, thermal radiation, porous medium, and magnetic field effects. To model this complex problem, we employed modified Navier–Stokes equations. Employing similarity transformations, assumptions, and non-dimensional parameters, the problem was effectively simplified. The MATLAB bvp4c technique, a well-established numerical approach, was then employed to solve the resulting mathematical formulation. Graphical representations are presented to illustrate various aspects of the flow, facilitating a comprehensive understanding of the system. Comparisons are drawn among the flow characteristics of mono nanofluid, and the developed hybrid nanofluid. It is noted from the current analysis that the temperature strength increases with higher values of the magnetic field parameter, curvature parameter, radiation parameter, and Eckert number in both fluid cases. The Nusselt number increases with higher values of Prandtl number and thermal relaxation parameter. The identified patterns in velocity distribution, temperature strength, and fluid behavior provide a valuable foundation for optimizing thermal efficiency in diverse industrial applications. By leveraging the insights gained from this research, manufacturers can make informed decisions to enhance heat transfer processes, particularly in areas such as metal forming and stretch dies.
MD. Shamshuddin, S. O. Salawu, K. Ramesh, Vishwambhar S. Patil, and Pooja Humane
Springer Science and Business Media LLC
Sneha Gajbhiye, Arundhati Warke, and Katta Ramesh
Elsevier BV
Prakash Jayavel, Muhammad Ramzan, Salman Saleem, Anjali Verma, and Katta Ramesh
Springer Science and Business Media LLC
Ankush Raje, Foram Koyani, Ashlesha A. Bhise, and Katta Ramesh
World Scientific Pub Co Pte Ltd
Heat transfer and entropy generation are crucial considerations in the nuclear industry, where the safe and efficient transfer of heat is essential for the operation of nuclear reactors and other nuclear systems. Casson fluid is a useful tool in the nuclear industry for simulating the flow behavior of nuclear fuels and coolants, and for optimizing the design and operation of nuclear reactors. In view of this, the current investigation deals with the heat and fluid flow of unsteady Casson fluid in a circular pipe under the influence of magnetic field, internal heat generation, entropy generation and porous media. The governing equations have been simplified under suitable assumptions and nondimensional quantities. The simplified dimensionless governing equations have been solved using the method of separation of variables along with Bessel functions. It is concluded from the investigation that the temperature increases with time. The Casson fluid parameter raises the temperature and entropy generation. The temperature, entropy generation and Bejan number are the decreasing functions of the Prandtl number.
K. Ramesh, A.S. Warke, K. Kotecha, and K. Vajravelu
Elsevier BV
Lioua Kolsi, Ahmed Kadhim Hussein, Walid Hassen, Lotfi Ben Said, Badreddine Ayadi, Wajdi Rajhi, Taher Labidi, Ali Shawabkeh, and Katta Ramesh
MDPI AG
A numerical investigation of a phase change material (PCM) energy storage tank working with carbon nanotube (CNT)–water nanofluid is performed. The study was conducted under actual climatic conditions of the Ha’il region (Saudi Arabia). Two configurations related to the absence or presence of conductive baffles are studied. The tank is filled by encapsulated paraffin wax as the PCM, and CNT–water nanofluid flows through the capsules. The main goal is to increase the temperature of the PCM to 70 °C in order to store the thermal energy, which can then be used during the night and cloudy weather. Numerical computations are made using the finite element method (FEM) based on actual measured weather conditions. Climate conditions were collected from a weather station located on the roof of the engineering college’s building at the University of Ha’il. The collected data served as input to the numerical model, and the simulations were performed for three months (December, March, and July). The solid CNT volume fraction range was (0 ≤ ϕ ≤ 0.05) and the nanofluid volume flow rate ranged was (0.5 L/min ≤ V ≤ 3 L/min). For both considered cases (with and without baffles), it was found that the use of CNT–nanofluid led to a reduction in the charging time and enhanced its performance. An increase in the volumetric flow rate was found to accelerate the melting process. The best performances of the storage tank occurred during July due to the highest solar irradiation. Furthermore, it was found that the use of baffles had no beneficial effects on the melting process.
Basma Souayeh and Katta Ramesh
MDPI AG
In the modern age, the study of nanofluids over the stretching sheet has received much attention from researchers due to its significant role in the polymer industry, for instance in the production of fibre sheets and the extrusion of molten polymers through a slit die. Due to these affordable applications, the current study focusses on the motion of metallic ternary nanofluids (Ag-Au-Cu/H2O) past an exponential stretching sheet, taking diverse effects such as gyrotactic microorganisms, activation energy, buoyancy forces and thermal radiation into consideration. The model was created with the complex system of partial differential equations. Suitable similarity transformations and non-dimensional quantities were utilized to transform the complex system of partial differential equations to a set of ordinary differential equations. The resultant system is solved with the help of Matlab software. The computational outcomes are presented through the tables and pictorial notations. It is observed from the current analysis that the nanoparticle temperature of the ternary nanofluid enhances with the enhancement of activation energy and Brownian motion parameters. For the rising values of Lewis and thermophoresis numbers there is a declination in the nanoparticle concentration distribution. The Brownian motion and radiation effects increase the microorganism profile.
Shafqat Hussain, Prakash Jayavel, Bander Almutairi, and Katta Ramesh
Informa UK Limited
MD. Shamshuddin, T. M. Agbaje, K. K. Asogwa, and Katta Ramesh
Informa UK Limited
B. C. Prasannakumara, K. Ramesh, R. Naveen Kumar, and R. J. Punith Gowda
CRC Press
M. Gnaneswara Reddy and K. Ramesh
CRC Press
Katta Ramesh, Fateh Mebarek-Oudina, and Basma Souayeh
CRC Press
Tosin Oreyeni, Akintayo Oladimeji Akindele, Adebowale Martins Obalalu, Sulyman Olakunle Salawu, and Katta Ramesh
Informa UK Limited
Sridhar Vemulawada, Prakash Jayavel, Anjali Verma, Kaouther Ghachem, Lioua Kolsi, and Katta Ramesh
Informa UK Limited
Nehad Ali Shah, Olubode Kolade Koriko, Katta Ramesh, and Tosin Oreyeni
Springer Science and Business Media LLC
Vemulawada Sridhar, Najiyah S Khashi'ie, and Katta Ramesh
SAGE Publications
Electroosmotic flow through the biomechanical devices is efficient in targeting drug delivery of the human body parts related to the digestive and renal systems. In view of this, the present work is focused on the mathematical modeling of electroosmotic nanofluid transport driven by peristalsis. The impacts of magnetohydrodynamics, viscous dissipation, and thermal radiation on the intended stream have been considered. The resulting system of equations has been simplified with the lubrication approach and obtained the exact solutions for temperature, shear stress, velocity, trapping, and entropy generation. The impact of distinct physical parameters on nanofluid flow is graphically computed. It can be seen from the present study that the stronger electric field accelerates the entropy generation near the channel walls. A higher temperature is observed for blade nanoparticles presented in the base fluid. The stronger magnetic field reduces the size of the bolus. The higher velocities are noticed for the blood-platinum-based nanofluid as compared with blood-copper-based nanofluid.
Katta Ramesh, Kanayo K. Asogwa, Tosin Oreyeni, M. Gnaneswara Reddy, and Anjali Verma
Springer Science and Business Media LLC
Mubbashar Nazeer, K. Ramesh, Hussain Farooq, and Qasiar Shahzad
Informa UK Limited