Rizwan Akhtar

ORCID: 0000-0003-0023-5056
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About
Contact & Profiles
Research Areas
  • Nanofluid Flow and Heat Transfer
  • Mobile Ad Hoc Networks
  • Opportunistic and Delay-Tolerant Networks
  • Caching and Content Delivery
  • Fluid Dynamics and Turbulent Flows
  • Heat Transfer Mechanisms
  • Peer-to-Peer Network Technologies
  • Advanced Malware Detection Techniques
  • IoT and Edge/Fog Computing
  • Heat Transfer and Optimization
  • Advanced DC-DC Converters
  • Heat and Mass Transfer in Porous Media
  • Ocean Waves and Remote Sensing
  • Energy Efficient Wireless Sensor Networks
  • Cloud Computing and Resource Management
  • Blockchain Technology Applications and Security
  • Lattice Boltzmann Simulation Studies
  • Direction-of-Arrival Estimation Techniques
  • Security in Wireless Sensor Networks
  • Cryptography and Data Security
  • Advanced Battery Technologies Research
  • Multilevel Inverters and Converters
  • Network Security and Intrusion Detection
  • Freezing and Crystallization Processes
  • Distributed Sensor Networks and Detection Algorithms

Integral University
2024-2025

University of Religions and Denominations
2023-2024

Karakoram International University
2017-2024

Pak-Austria Fachhochschule: Institute of Applied Sciences and Technology
2021-2022

Pakistan Institute of Engineering and Applied Sciences
2021-2022

Jiangsu University of Science and Technology
2019-2021

National Yunlin University of Science and Technology
2020

COMSATS University Islamabad
2015-2020

Jiangsu University
2018

University of Electronic Science and Technology of China
2013-2014

In this manuscript, a computational paradigm of technique shooting is exploited for investigation the three-dimensional Eyring-Powell fluid with activation energy over stretching sheet slip arising in field dynamics. The problem modeled and resulting nonlinear system PDEs transformed into ODEs using well-known similarity transformations. strength based computing approach employed to analyze dynamics system. proposed well-designed different scenarios on non-Newtonian sheet. Slip condition...

10.1155/2019/9860471 article EN cc-by Advances in Mathematical Physics 2019-05-06

The tremendous growth of computational clouds has attracted and enabled intensive computation on resource-constrained client devices. Predominantly, smart mobiles are to deploy data applications by leveraging the demand service model remote centres. However, outsourcing personal confidential servers is challenging for reason new issues involved in privacy security. Therefore, traditional advanced encryption standard (AES) algorithm needs be enhanced order cope with emerging security threats...

10.1155/2020/8863345 article EN Security and Communication Networks 2020-09-01

This study investigates the transportation of mass and heat in 3D flow hybrid nanofluids over a rotating disk presence uniform magnetic field acting along transverse direction to flow. Water is being used as base fluid mixed with nanoparticles aluminum oxide copper. The mathematical model nano-fluidic problem terms partial differential equations (PDEs) formulated by considering velocity slip at boundary transport mechanism due thermal convection radiation effects. Suitable similarity...

10.1063/1.5143937 article EN cc-by AIP Advances 2020-05-01

Wireless sensor network (WSN) comprises of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, and pressure, cooperatively forward the collected information destination through infrastructure. As nodes are energy constraint devices, therefore, importance efficient routing protocols has been increased. In order minimize consumption, recently, a number hierarchical proposed. For instance, LEACH is an elementary protocol that...

10.1155/2021/7459368 article EN cc-by Journal of Sensors 2021-01-01

Credibility of numerical results for peristaltic mechanism conductive nanofluid flowing through an asymmetric channel is evaluated sponsoring heat and mass transfer mechanism. The phenomenon non-magnetic chemotactic microorganisms employed to increase the stability nanofluid. fluid behavior affected by wall slip convective boundary conditions along with magnetic field. impacts Joule heating, viscous dissipation, thermal radiations, Brownian thermophoresis motion are treated as well. model...

10.1016/j.csite.2021.101285 article EN cc-by Case Studies in Thermal Engineering 2021-07-30

Climate change poses a significant threat to the lives and livelihoods of local communities in high mountain regions. This study examines perception climate its impact on Gilgit-Baltistan. Empirical evidence was gathered through four focused group discussions thirty in-depth interviews with Darkut Shishkat areas. found that perceive noticeable temperature patterns terms an increase average temperatures shorter winters. Such changes lead melting glaciers subsequently frequent floods during...

10.1080/17524032.2023.2229044 article EN Environmental Communication 2023-06-27

In this study, an attempt is made to explore the two‐phase Casson nanofluid passing through a stretching sheet along permeable surface with effects of chemical reactions and gyrotactic microorganisms. By utilizing strength similarity transforms governing PDEs are transformed into set ODEs. The resulting equations handled by using proficient numerical scheme known as shooting technique. Authenticity outcomes established comparing achieved results MATLAB built‐in solver bvp4c. for reduced...

10.1155/2019/1490571 article EN cc-by Mathematical Problems in Engineering 2019-01-01

Reactive power dispatch is a vital problem in the operation, planning and control of system for obtaining fixed economic load expedition. An optimal reduces grid congestion through minimization active loss. This strategy involves adjusting transformer tap settings, generator voltages reactive sources, such as flexible alternating current transmission systems (FACTS). The improves security, voltage profile, transfer capability overall network efficiency. In present work, fractional...

10.1038/s41598-020-79838-2 article EN cc-by Scientific Reports 2021-01-12

In this study, the competency of numerical computational framework based on Lobatto IIIA technique is utilized for dynamical analysis Darcy‐Forchheimer flow Sisko nanomaterial with nonlinear thermal radiation. The resultant PDEs fluid model expressions are transformed into system ODEs by exploiting similarity variables. Graphical representations and illustrations used to envisage characteristics various physical parameters interest velocity profile, nanoparticles concentration, temperature...

10.1155/2019/8974572 article EN cc-by Mathematical Problems in Engineering 2019-01-01

A theoretical investigation on heat transfer of nanofluid transport in a ciliated channel is presented. mathematical model for cilia oriented through the human male reproductive tract exhibited. Considering structure tubules, Reynolds number considered very small. The concept long wavelength approximation incorporated to flow problem. exact analytical expressions x-component velocity, temperature, nanoparticle concentration, stream function, volume rate, and pressure gradient are calculated....

10.1063/1.5135298 article EN cc-by AIP Advances 2020-03-01

This study has been managed for the investigation of entropy generation inclined magnetic field (MG) on Jeffery nanofluid flow a stretching surface containing viscous dissipation. Heat or absorption effects are likewise considered magnetohydromagnetic problem and electric is negligible. The boundary layer approach incorporated simplification proposed governing equations in which target analysis focused near fluidic problem. concept dimensionless parameters used system overcomes complexity...

10.1166/jno.2021.2909 article EN Journal of Nanoelectronics and Optoelectronics 2021-01-01

A novel application of Lobatto IIIA computing solver is presented for the solution nanofluidic Buongiorno model in porous space. Incompressible electrically conducting fluid mixed with nanomaterial considered. Flow expression modelled via nonlinear convection and Navier’s slip condition. Activation energy, Joule heating non-liner thermal radiation characterise heat/mass transport. The governing PDEs considered problem are transformed into an equivalent system ODEs using similarity variables....

10.1063/1.5099030 article EN cc-by AIP Advances 2019-05-01

In this study, a novel theoretical model for three‐dimensional (3D) laminar magnetohydrodynamic (MHD) flow of non‐Newtonian second‐grade fluid along plate semi‐infinite length is developed based on slightly sinusoidal transverse suction velocity. The velocity involves steady distribution with low superimposed perpendicularly varying dispersion. strength the uniform magnetic field incorporated in normal direction to wall. variable transforms fluidic problem into 3D because plane proposed...

10.1155/2019/2584397 article EN cc-by Mathematical Problems in Engineering 2019-01-01

Information Communication Technology (ICT) environment in traditional power grids makes detection and mitigation of DDoS attacks more challenging. Existing security technologies, besides their efficiency, are not adequate to cater Smart Grids (SGs) due highly distributed dynamic network environments. Recently, emerging Software Defined Networking- (SDN-) based approaches proposed by researchers for SG’s protection; however, they only able protect against flooding dependent on static...

10.1155/2021/6629098 article EN cc-by Security and Communication Networks 2021-03-20

Scraped surface heat exchangers (SSHEs) diversely used in various industries for different settings when continuous processing of fluid and related material is required. In this work, transfer steady incompressible flow a Newtonian the presence high magnetic field with temperature variant viscosity small gap SSHE studied fixed difference narrow gaps between rotor stator. The fluidic system modeled mathematically terms PDEs non-isothermal megnetohydrodynamic (MHD) dependent linear blade...

10.1063/1.5099999 article EN cc-by AIP Advances 2019-07-01

Realization of Internet Things (IoT) has revolutionized the scope connectivity and reachability ubiquitously. Under umbrella IoT, every object which is smart enough to communicate with other leads enormous data generation varying sizes nature. Cloud computing (CC) employs centralized centres for provisioning remote services resources. However, reason being far away from client devices, CC their own limitations especially time resource critical applications. The characteristics often result...

10.1155/2020/8871976 article EN cc-by Mobile Information Systems 2020-09-16

A novel theoretical model for unsteady, non-isothermal flow with temperature variant viscosity the Newtonian fluid in presence of transverse magnetic field is studied ductus efferentes human male reproductive tract. Importance cilia transport through efferente elaborated this study. To investigate flow, we considered a channel and constant difference imposed between wall channel. mathematical developed analytical solution achieved help Adomian decomposition method (ADM) MHD heat dependent...

10.1063/1.5110433 article EN cc-by AIP Advances 2019-08-01

Wireless sensor networks (WSNs) are employed for different applications the reason of small‐sized and low‐cost nodes. However, several challenges that include a low powered battery nodes restrict their functionality. Therefore, saving energy in routing process to extend network life is serious concern while deploying on WSN. To this end, key technology clustering, which helps maximize scalability lifecycle. Base station (BS) collects data, aggregates it, extracts required information. obtain...

10.1155/2021/6628226 article EN cc-by Wireless Communications and Mobile Computing 2021-01-01

Photovoltaic (PV) power is one of the promising solutions to address fast-growing electricity demand. Electricity generated from array solar panels not fixed due continuous change in environmental conditions. Therefore, an efficient management system required facilitate consumer with uninterruptable supply (UPS). When energy demand lower than by PV system, excessive must be stored batteries and, when higher then battery released order fulfil load a bidirectional DC–DC converter store and...

10.3390/en12152884 article EN cc-by Energies 2019-07-26

Mobile social network (MSN) consists of a flavor science and wireless communications for mobile networking. A mode to provide communication process between different nodes with similar interest's exploits MSN. Content delivery (CDN) improves the performance MSN quick quite reliable applications by distributing content through some agents placed nearby community. architecture can be modeled smooth data exchange, sharing, packets among nodes. The fundamental working principle architectural...

10.1186/s13638-019-1458-5 article EN cc-by EURASIP Journal on Wireless Communications and Networking 2019-05-23
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