THE EFFECT OF ROTATION RATES, CYLINDER DIAMETER AND LATERAL BOUNDARIES ON STROUHAL NUMBER IN UNSTEADY REGIMES AT DIFFERENT REYNOLDS NUMBERS
The lateral boundary conditions, rotation rates parameters, domain size, cylinder diameter, and Reynolds number are all responsible for the variation of the Strouhal number. In this study, we have varied the domain size, lateral boundary conditions, downstream locations, and the cylinder diameter at specific values of Reynolds number for stationary...
By Marouane Essahraoui, Rachid El Bouayadi, Aouatif Saad
FINITE ELEMENT ANALYSIS OF A KNEE JOINT DURING JUMP
Athletes experience high levels of stress during sports activities. One of the most common activities is jumping. This is a very complex activity, which can lead to injuries and long recovery periods. In this research, professional athletes performed jumps in order to obtain ground force values from a force plate. A combination of ground force meas...
By Radivoje Radaković, Aleksandra Vulović, Themis Exarchos, Nenad Filipović
UNSTEADY NUMERICAL INVESTIGATION OF FERROFLUID FORCED CONVECTION OVER A DOWNWARD STEP CONTAINING A ROTATING FINNED CYLINDER
The unsteady investigation of ferrofluid flow forced convection over a downward step containing a rotating finned cylinder is conducted numerically. The dimensionless partial differential equations of conservation equations for mass, momentum and energy and the boundary conditions associated with them are solved by using the finite element method. ...
By Meriem Toumi, Mohamed Bouzit, Abderrahim Mokhefi, Djamila Derbal
COST-EFFECTIVENESS ANALYSIS OF IN SILICO CLINICAL TRIALS OF VASCULAR STENTS
Today, it takes ten to twelve years on average to complete a clinical trial before a new drug is approved and brought to marktet. Moreover, the evaluation of the efficacy and safety of drugs or devices has been performed in the linear and sequential manner with limited change over the past decade. The InSilc project is an EU funded project (www.ins...
By Milica Kaplarević, Marija GaÄić, Georgia Karanasiou, Dimitris Fotiadis, Nenad Filipović
EXPERIMENTAL ELECTROCHEMOTHERAPY USING NOVEL DESIGN SINGLE NEEDLE DEVICE
This is a feasibility study for the application of a novel concept of single-needle device for localized chemotherapy. Systemic chemotherapy has numerous and severe side effects. To conduct localized (electro)chemotherapy, we designed a novel device that does not currently exist on the market. Electrochemotherapy is based on the cell membranes temp...
By Aleksandar Cvetković, Danijela Cvetković, Danko Milašinović, Nemanja Jovičić, Nikola Miailović, Dalibor Nikolić, Slobodanka Mitrović, Nenad Filipović
IMPROVEMENT OF THE SPARSE MATRICES STORAGE ROUTINES FOR LARGE FEM CALCULATIONS
Efficient memory handling is one of the key issues that engineers and programmers face in developing software for numerical analysis such as the Finite Element Method. This method operates on huge matrices that have a large number of zero coefficients which waste memory, so it is necessary to save it and to work only with non-zero coefficients usin...
By Dragoljub Stevanović, Marko Topalović, Miroslav Živković
SORET AND VARIABLE THERMAL CONDUCTIVITY EFFECTS ON HYDRO-MAGNETIC RADIATING FLUID PAST A VERTICAL PLATE WITH POROUS MEDIUM
Thermal diffusion and variable thermal conductivity effects on unsteady magnetohydrodynamic (MHD), heat and mass transfer flow past an infinite vertical porous plate have been investigated and analyzed numerically. The resultant flow governing equations are resolved numerically by the finite-difference scheme of the Crank-Nicolson type implicit met...
By M. Santha Raju, G.S.S. Raju
HEAT TRANSFER TO A BOILING LIQUID – NUMERICAL STUDY
Due to extensive research efforts within the past thirty years, the mechanisms by which bubbles transfer energy during pool boiling are relatively well understood and have various applications in reactors, rockets, distillation, air separation, refrigeration and power cycles. In this paper, CFD analysis of heat transfer characteristics in nucleate ...
By Andrijana Stojanović, Srđan Belošević, Nenad Crnomarković, Ivan Tomanović, Aleksandar Milićević
COMPUTATIONAL MODEL FOR HEART TISSUE WITH DIRECT USE OF EXPERIMENTAL CONSTITUTIVE RELATIONSHIPS
Heart wall tissue plays a crucial role in living organisms by generating the mechanical force for blood flow. This tissue has a complex internal structure comprised mostly of muscle cells, in which biochemical energy is transformed into mechanical active stress under rhythmical electrical excitation. The overall heart functioning depends, among oth...
By Miloš Kojić, Miljan Milošević, Bogdan Milićević, Vlada Geroski, Vlada Simić, D. Trifunović, G. Stanković, Nenad Filipović
ON DIFFUSE INSTABILITY OF ORTHOTROPIC VISCOPLASTIC PLATES
Elastic strain is covered by the effective medium homogenization method inside a representative volume element (RVE). It has an incremental quasi rate-independent (QRI) form obtained by the endochronic concept of thermodynamic time. The rate dependence takes place by means of stress rate dependent value of the initial yield stress. Free meso rotati...
By Ljudmila T. Kudrjavčeva, Milan V. Mićunović