Department of Mechanical engineering: Recent submissions

Now showing items 21-40 of 1341

Application of mesh-free and finite element methods in modelling nano-scale material removal from copper substrates: a computational approach

Sharma, Anuj (Elsevier, 2024-08)

This study explores the modelling methodology using mesh-free smoothed particle hydrodynamics (SPH) and finite element modelling (FE) techniques to simulate the AFM-based nano-scratching processes for advancing precision ...
Molecular dynamics modelling of micro/nano manufacturing processes

Sharma, Anuj (Sage, 2024)

Manufacturing processes such as machining, casting, welding, forming including additive manufacturing are essential processes to fabricate various types of components. These manufacturing processes have been developed and ...
A review of the applications of machine learning for prediction and analysis of mechanical properties and microstructures in additive manufacturing

Challa, Jagat Sesh; Singh, Amit Rajnarayan (ACM Digital Library, 2024-12)

This article provides an insightful review of the recent applications of machine learning (ML) techniques in additive manufacturing (AM) for the prediction and amelioration of mechanical properties, as well as the analysis ...
From information overload to lucidity: a survey on leveraging gpts for systematic summarization of medical and biomedical artifacts

Chalapathi, G.S.S.; Singh, Amit Rajnarayan (IEEE, 2024-12)

In medical research, the rapid proliferation of condition-specific studies has led to an information overload, making it challenging for researchers and practitioners to stay abreast of the latest findings. This paper ...
Post-impact lamella evolution of drop impact on superhydrophobic cylindrical surfaces at high Weber number

Harikrishnan, A. R. (AIP, 2024-02)

Drop surface interaction is omnipresent in nature and vital to many engineering applications. Most previous studies on drop impact dynamics on superhydrophobic cylindrical surfaces have focused on low-impact Weber (We) ...
Role of retraction dynamics in bouncing to pinning transition during drop impact on cold superhydrophobic surfaces

Harikrishnan, A. R. (AIP, 2024-09)

A deeper understanding of the post-impact phenomenology of droplets on cold surfaces is crucial for comprehending and developing anti-icing surfaces for various applications. In the present study, a systematic experimental ...
Solutal Marangoni augmented levitation time of an aqueous surfactant drop over an immiscible oil pool

Harikrishnan, A. R. (Elsevier, 2024-07)

Droplets are found to exhibit a finite residence time over the volatile liquid pool due to the confined evaporation mediated sustained thin film draining. The levitated drops are quite critical in biomedical applications ...
Optimization of rifled tube by parametric changes using CFD for goodness factor enhancement

Ranganayakulu, Chennu (Wiley, 2023-11)

In this study, extensive research was conducted using computational fluid dynamics (CFD) ANSYS®–FLUENT, with the k–ε turbulence heat transfer module to optimize the rifled-tube heat exchanger through parametric modifications ...
Aerodynamic and Thermal Optimization of Plate Heat Exchanger Fin Arrangements

Ranganayakulu, Chennu (Springer, 2024-02)

Plate-fin heat exchanger systems today are exceedingly prevalent but greatly unoptimized because of the use of off-the-shelf heat exchangers, which considerably affect system efficiency. This study aims to provide a ...
Experimental investigation on condensation heat transfer coefficient and frictional pressure drop of low GWP refrigerant R1234yf on a wavy fin surface

Ranganayakulu, Chennu (Elsevier, 2024-01)

Refrigerant R1234yf is an ideal substitute to replace R134a due to its lower value of global warming potential (GWP). The thermophysical properties of R1234yf are similar with R134a and thus it is considered as a potential ...
Comparative Study of Straight and Venturi Channel Cross Sections of Microchannel Heat Exchangers

Ranganayakulu, Chennu (ASME, 2024-09)

This study provides extensive research on fluid flow and heat transfer for four-layered ceramic-compact counterflow microchannel heat exchangers (CFMCHE) using CFD-ACE®, a computational fluid dynamics (CFD) package. The ...
Numerical analysis of generation of Colburn j and friction f factor for the pin fins of a compact heat exchanger using CFD approach

Ranganayakulu, Chennu (Springer, 2024-03)

A Compact Heat Exchanger has a large heat transfer area per unit volume, which is achieved by utilizing extremely high-density fins. A pin fin is one of the most frequently used fins because of its advantages such as minimal ...
An In-Depth Comparison of Straight and Wavy Microchannel Heat Exchangers

Ranganayakulu, Chennu (ASME, 2024-05)

This paper presents extensive fluid flow and Heat-Transfer studies conducted using a commercial computational fluid dynamics (CFD) package known as CFD-ACE® to elaborate and expand on the reference studies available for ...
Thermal performance of three-wheel and split-wheel air cycle systems for a civil aircraft environmental control system (ECS)Performance thermique des systèmes à cycle à air à trois roues et à roues séparées pour le système de contrôle de l'environnement (ECS) d'un avion civil

Ranganayakulu, Chennu (Elsevier, 2024-10)

The conventional approach of regulating cabin temperature and pressure on aircraft is to utilize engine-bleed air through an environmental control system (ECS). The extraction of bleed air from the engine leads to a decrease ...
Establishment of Colburn ‘j’ factor and Fanning friction factor ‘f’ correlations for a compact heat exchanger having perforated wavy fins using Computational Fluid Dynamics

Ranganayakulu, Chennu (Elsevier, 2024-09)

Wavy fins find widespread application in compact heat exchangers, due to their ability to achieve high heat transfer coefficients and lower friction factors, resulting in reduced pumping power requirements and improved ...
Additive Manufacturing of Complex Shapes Through Weld-Deposition and Feature Based Slicing

Sharma, Panchagnula Jayaprakash (ASME, 2016-04)

Fabricating fully dense and functional metallic components is one of the important challenges in Additive Manufacturing (AM). Additive Manufacturing is a technology in which functional components can be fabricated rapidly ...
Inclined slicing and weld-deposition for additive manufacturing of metallic objects with large overhangs using higher order kinematics

Sharma, Panchagnula Jayaprakash (Taylor & Francis, 2016-04)

This paper presents an automated tool path planning for deposition of overhanging features using GMAW-based weld-deposition. Overhanging features, although possible to a certain extent in power-bed process like SLS, remain ...
Manufacture of complex thin-walled metallic objects using weld-deposition based additive manufacturing

Sharma, Panchagnula Jayaprakash (Elsevier, 2018-02)

Gas Metal Arc Welding (GMAW) based weld-deposition process is one of the deposition-based Additive Manufacturing (AM) processes with the ability to produce fully dense complex functional metallic objects. Due to its high ...
Feature based Weld-Deposition for Additive Manufacturing of Complex Shapes

Sharma, Panchagnula Jayaprakash (Springer, 2016-08)

Fabricating functional metal parts using Additive Manufacturing (AM) is a leading trend. However, realizing overhanging features has been a challenge due to the lack of support mechanism for metals. Powder-bed fusion ...
A new approach for attaining uniform properties in build direction in additive manufactured components through coupled thermal-hardness model

Sharma, Panchagnula Jayaprakash (Elsevier, 2019-04)

The theme of the investigation is to strategize uniform build direction properties in additive manufactured components. A computationally efficient model for prediction of layer-wise thermal cycle is developed using control ...

Now showing items 21-40 of 1341

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