FAULT DETECTION USING RADIOSENSOR DIAGNOSTICS
...
By Konstantin Boikov
UNSTEADY MHD NON-NEWTONIAN CASSON FLUID FLOW IN A POROUS MEDIUM WITH CONVECTIVE DIFFUSION, RADIATION, JOULE AND VISCOUS HEATING DISSIPATION EFFECTS: A NUMERICAL STUDY
...
By Bijjula Prabhakar Reddy, Oluwole Daniel Makinde, Paul Majani Matao
SMEARED CONCEPT FOR MODELING GRADIENT-DRIVEN PROBLEMS IN COMPOSITE MEDIA (KOJIC TRANSPORT MODEL, KTM) AS A BASIS FOR BROAD APPLICATIONS
The extremely complex biological and biochemical processes are mainly treated by laboratory and clinical investigations. In recent decades, the application of computational modeling has become more important in research and applications in the medical sciences. Despite enormous efforts and achievements in this modeling, there is still a need for ne...
By Miloš Kojić, Miljan Milošević, Vladimir Simić, Bogdan Milićević
CONSTITUTIVE MODELS FOR SOIL AND ROCK
The paper presents the procedure of implicit stress integration for constitutive models for soil and rock. The theoretical basis of Mohr-Coulomb, Matsuoka-Nakai, Hoek-Brown and Hyperbolic soil constitutive models are presented. Stress integration was performed using the theory of incremental plasticity. The general procedure of implicit stress inte...
By Dragan Rakić, Miroslav Živković
OVERVIEW OF SURROGATE MODELING FOR HUXLEY-TYPE MUSCLE SIMULATIONS IN CARDIAC BIOMECHANICS
Huxley-type muscle models offer a physiologically grounded description of cardiac contraction but remain computationally prohibitive for large-scale, multi-scale simulations. This article reviews surrogate modeling strategies that alleviate these costs for ventricular biomechanics, with emphasis on data-driven (RNN/TCN/GRU) and physics-informed (PI...
By Bogdan Milićević, Miloš Ivanović, Boban Stojanović, Miljan Milošević, Miloš Kojić, Nenad Filipović
SOLVING WAVE ACOUSTIC EQUATION USING FINITE ELEMENT METHOD IN PAK SOLVER
Wave acoustic equation is implemented and solved using finite element method in PAK solver to simulate propagation of sound waves, that cause oscillations of ear’s components, such as cochlea (part of inner ear). To simulate mechanical behaviour of cochlea, behaviour of fluid in chambers and behaviour of basilar membrane which separates them ...
By Milica Nikolić, Velibor Isailović, Nenad Filipović
APPLICATION OF PAK SOFTWARE FOR THE CALCULATION OF vFFR IN CORONARY ARTERIES
X-ray angiography is one of the diagnostic procedures applied in clinical practice to analyze the state of patient-specific coronary arteries. During this examination a parameter called fractional flow reserve (FFR) is invasively measured to quantitatively assess the existence of potential stenosis and its significance. The software proposed in thi...
By Tijana Đukić, Ognjen Pavić, Lazar Dašić, Tijana Geroski, 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
OPTIMIZATION OF FLUID DYNAMICS BY SHEAR THINNING IN STIRRED TANKS USING ANCHOR STIRRERS WITH CONVERGENT HOLLOWS
Agitator shapes are of paramount importance in mixing processes, prompting researchers to explore new configurations to improve these operations. Our study focuses on the three-dimensional fluid dynamics in a flat-bottomed cylindrical tank equipped with different anchor shapes, ranging from the standard configuration to modified variants. Using bot...
By Abderrahim Sidi Mohammed Nekrouf, Sarra Youcefi, Mohamed Bouzit
FATIGUE ANALYSIS BASED ON FATIGUE FAILURE APPROACH AND DAMAGE TOLERANT APPROACH IN CORONARY STENT DESIGN
Over the last few decades, cardiovascular stents have emerged as crucial biomedical devices. Stents undergo cyclic physiological loading, which can lead to progressive accumulation of structural damage over time eventually resulting in a stent fracture. Considering the critical role of stents, it is necessary to assess their fatigue endurance and p...
By Gordana Jovičić, Aleksandra Vulović, Arso Vukićević, Nenad Đorđević, Nenad Filipović