NUMERICAL ANALYSIS OF AN INNOVATIVE ENERGY DISSIPATION DEVICE
Application of systems for passive vibration control is an efficient way for seismic protection of structures. Systems for passive vibration control consist of seismic isolation devices and energy dissipation devices. Base isolation of structures is a concept where devices for passive vibration control are placed in foundations of buildings. Variou...
By Andrija Zorić, Dragan Zlatkov, Marina Trajković-Milenković, Marina Mijalković, Biljana Mladenović
SIMULATION OF FLUID-STRUCTURE INTERACTION IN AN ARTERY ALTERED BY SEGMENTAL MEDIOLYSIS
Segmental arterial mediolysis (SAM) is an asymptomatic, non-atherosclerotic and non-inflammatory disease of unknown etiology. It affects medium-sized arteries and is characterized by vacuolization and lysis at the level of the media which can lead to dissection, steno-occlusion, or an aneurysm. In this article, a simulation of fluid-structure inter...
By Mouloud Mohellebi, Mohamed Ferrouk, Hocine Tebbiche
EFFECTS OF GAS RADIATION AND ACCELERATED FLOW ON SOLAR HEATER PERFORMANCE
In this paper, the performance enhancement of solar gas heaters is evaluated by taking the advantage of both radiating gas effect and using converged ducts with the accelerated flow. The analyzed solar gas heater includes the glass cover, air gap, absorber, gas channel, bottom plate, and insulation. The inclined position of the bottom plate relativ...
By Seyed Abdolreza Gandjalikha Nassab
FIGURE OF MERIT STUDY FOR VALVELESS PIEZOELECTRIC MICROPUMP DESIGNED TO HANDLE LIQUID AND GAS FLUID IN MEDICAL AND ENVIRONMENTAL APPLICATIONS
Micropumps are revolutionizing compact and autonomous monitoring systems due to their portability and efficiency. In this paper, we present a valveless piezoelectric micropump design. This micropump distributes gas and liquid using a PDMS membrane that moves in response to a force applied by a piezoelectric actuator. The proposed design aims to ach...
By Asma Bouzid, Mohamed El Amine Brixi Negassa, Parastesh Pirastesh, Joel Charrier, Sofiane Soulimane
MODELLING OF DAMAGE IN COMPOSITES USING SMOOTH PARTICLE HYDRODYNAMICS METHOD
This paper aims at the development and implementation of an algorithm for the treatment of damage and fracture in smooth particle hydrodynamic (SPH) method, where free surface, crack opening, including its propagation and branching is modelled by weakening the interparticle interactions combined with the visibility criterion. The model is consisten...
By Rade Vignjević, Tom De-Vuyst, Nenad Đorđević
In this paper, a new design of solar air-water heater for the purpose of performance improvement is introduced for the first time. This thermal system will be a good alternative for both space heating and providing domestic hot water for use in buildings. In the proposed solar collector, the absorbed incoming solar irradiation is transferred into b...
By Seyyed Abdolreza Gandjalikhan Nassab
LOAD-CARRYING CAPACITY OF PIVOTED CURVED SLIDER BEARINGS SUBJECT TO SURFACE ROUGHNESS PATTERN AND NON-NEWTONIAN FLUID FLOW BEHAVIOR
The present paper analyzes the Rabinowitsch fluid (RF) behavior on a pivoted curved slider with surface roughness (SR) with the aid of the perturbation technique. In order to account for the random roughness of the bearing surfaces, a stochastic random variable with a nonzero mean, variance, and skewness was taken into consideration. The averaged R...
By Amit Kumar Rahul, Manoj Kumar Singh, Om Namah Sivaya, Saurabh Chandra Maury, Ravi Tiwari, Rohahn Biswas
PROJECT RISKS DURING THE COVID-19 PANDEMIC AND THEIR EFFECTS ON DELAYS AND COST OVERRUNS
The COVID-19 pandemic has significantly impacted project implementation costs and caused delays across numerous industries. Various analysis found in the literature show that the predominant cause of project delays and higher costs have been people, material, and equipment movement restrictions, supply chain disruptions, and social distancing polic...
By Ilija Stojanović, Marko Selaković, Marija Gačić, Milica Kaplarević, Nenad Filipović
FLOW AND HEAT TRANSFER OF NON-NEWTONIAN FLUIDS IN CONFINED TRIANGULAR GEOMETRIES: A COMPUTATIONAL APPROACH
This study examines mixed convection heat transfer in a lid-driven triangular cavity containing three heated horizontal finned cylinders immersed in power-law fluids. The cavity features inclined sidewalls maintained at a cold temperature, while the top adiabatic lid moves at a uniform velocity. The objective is to analyze the fluid’s behavio...
By Youcef Lakahal, Houssem Laidoudi
LIE DERIVATIVE DISCRETIZATION SCHEME FOR SOLVING VARIABLE MASS SYSTEMS
Lie derivative plays a key role in mathematics and physics. In particular, the Lie derivative discretization scheme has been implemented for a relatively large time step in order to quickly solve the numerical solution of the system. In this paper, an algorithm of the Lie derivative discretization scheme is applied to variable mass systems. Four di...
By Xinyue Jia, Chang Liu, Wenan Jiang