Department of Mechanical engineering: Recent submissions

Now showing items 261-280 of 1554

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 ...
Fabrication of hoop-wound glass fiber reinforced plastic cylindrical shells using filament winding machine

Sharma, Panchagnula Jayaprakash (Elsevier, 2020)

Glass Fiber Reinforced Plastic (GFRP) composites are playing an important role in the commercial industries like aerospace, marine and automotive, due to its notable material properties over metals. Development of these ...
Influence of Various Tool Path Patterns on Hardness Used in Weld Deposition-Based Additive Manufacturing

Sharma, Panchagnula Jayaprakash (Springer, 2019-10)

Identification of optimal tool path is critical for successful fabrication of bulk metallic parts using weld deposition-based additive manufacturing (AM). The various features of tool path, i.e., the number of starts and ...
Effect of Cutting Environments on Drilling Induced Damage in GFRP Nanocomposites

Sharma, Panchagnula Jayaprakash (ASME, 2021-02)

Drilling is most commonly used secondary machining process for structural joining of Glass Fiber Reinforced Plastic (GFRP) composites. Performing drilling operations on GFRPs/Multi-Walled CarbonNanoTubes (MWCNTs) reinforced ...
A Complete Study on Various Area Filling Strategies Used in Weld Deposition-Based Additive Manufacturing

Sharma, Panchagnula Jayaprakash (Springer, 2021-06)

Achieving the optimal toolpath as well as obtaining the desired physical and geometrical properties for bulk metallic parts through weld deposition-based additive manufacturing (AM) is a challenging task. The current work ...
Prediction of drilling induced delamination and circularity deviation in GFRP nanocomposites using deep neural network

Sharma, Panchagnula Jayaprakash; Jasti, Naga Vamsi Krishna (Elsevier, 2022)

Drilling of Glass Fiber Reinforced Polymer (GFRP) nanocomposites is most prevailing topic to understand the composite behaviour under different cutting conditions. The present study is mainly focused on prediction of ...
Design, Development, and Manufacturing of Cost-Effective Face Shields for COVID-19

Sharma, Panchagnula Jayaprakash (Springer, 2022-11)

COVID-19 is a highly contagious respiratory disease and is declared as a pandemic by the World Health Organization (WHO). COVID-19 has disrupted global supply chains including those of medical products and created severe ...
A novel methodology to manufacture complex metallic sudden overhangs in weld-deposition based additive manufacturing

Sharma, Panchagnula Jayaprakash (Emerald, 2023-01)

Amongst various additive manufacturing (AM) techniques for realizing the complex metallic objects, weld-deposition (arc)-based directed energy AM technique is attaining more focus over commercially available powder bed ...
CoCoSo method-based optimization of cryogenic drilling on multi-walled carbon nanotubes reinforced composites

Sharma, Panchagnula Jayaprakash (Springer, 2022-05)

Continuous quest for lighter yet stronger materials has led to significant research in the field of composites. Modern-day nanocomposites have found widespread applications in diverse engineering sectors, which often require ...

Now showing items 261-280 of 1554

Search DSpace

Advanced Search

Browse

All of DSpace
This Collection
- By Issue Date
- Authors
- Titles
- Subjects

Recently added

Department of Mechanical engineering: Recent submissions

Search DSpace

Browse

All of DSpace

This Collection

My Account