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Biography
Prof. Dr. Constantin Fetecau is a distinguished Romanian mathematician renowned for his extensive contributions to applied mathematics, particularly in fluid mechanics and rheology. Born on January 4, 1946, in Scorțoasa, Buzău County, Romania, he earned his Ph.D. in Mathematics from the University "Al. I. Cuza" of Iași in 1979.
Prof. Fetecau's academic career spans several decades. He began as a scientific researcher at the Institute of Mathematics of the Romanian Academy in Iași (1968–1975) and later served in various teaching roles at the Iași Polytechnic Institute and the Technical University "Gheorghe Asachi" of Iași, where he became a full professor in 1994.
His research interests encompass fluid dynamics, magnetohydrodynamics (MHD), fractional calculus, and the study of non-Newtonian fluids. Prof. Fetecau has authored over 120 scientific papers and several textbooks, contributing significantly to the understanding of complex fluid behaviors.
Internationally recognized, Prof. Fetecau has held visiting professorships and research fellowships in countries including the United States, Germany, China, and Pakistan. He has been a member of the editorial boards of several scientific journals and has supervised numerous Ph.D. students, fostering academic growth in the field.
In recognition of his scholarly achievements, Prof. Fetecau has received several accolades, including the Spiru Haret Award from the Romanian Academy in 2004 and the Excellence Award from the Technical University "Gheorghe Asachi" of Iași in 2012.
Currently, he is affiliated with the Section of Mathematics at the Academy of Romanian Scientists in Bucharest, continuing his research and academic endeavors.
Research Interest
Prof. Dr. Constantin Fetecau's research interests lie primarily in the fields of fluid dynamics, non-Newtonian fluids, and magnetohydrodynamics (MHD). He has contributed extensively to the study of complex fluid behaviors, particularly in relation to fractional calculus and its applications to the modeling of various fluid systems. His work involves developing mathematical models to describe the behavior of fluids under different conditions, with a focus on those that do not follow Newton's classical laws of motion.
Prof. Fetecau's research extends to the study of magnetohydrodynamics, which deals with the behavior of electrically conducting fluids in magnetic fields, and he has made significant contributions to understanding these systems' dynamics. Additionally, his work on the application of fractional calculus to fluid dynamics has opened new avenues for exploring non-Newtonian fluid flow. His research is pivotal in advancing theoretical and applied understanding in several branches of applied mathematics and physics.
Open Access Policy refers to a set of principles and guidelines aimed at providing unrestricted access to scholarly research and literature. It promotes the free availability and unrestricted use of research outputs, enabling researchers, students, and the general public to access, read, download, and distribute scholarly articles without financial or legal barriers. In this response, I will provide you with an overview of the history and latest resolutions related to Open Access Policy.
The governing equations for the shear stress corresponding to some magnetohydrodynamic (MHD) motions of a large class of rate-type fluids are brought to light. In rectangular domains, the governing equations of velocity and shear stress are identical as form. The provided governing equations can be used to solve motion problems of such fluids when shear stress is prescribed on the boundary. For illustration, the motion in an infinite circular cylinder with shear stress on the boundary is discussed.
Open Access Policy refers to a set of principles and guidelines aimed at providing unrestricted access to scholarly research and literature. It promotes the free availability and unrestricted use of research outputs, enabling researchers, students, and the general public to access, read, download, and distribute scholarly articles without financial or legal barriers. In this response, I will provide you with an overview of the history and latest resolutions related to Open Access Policy.
The analytical study examines the isothermal, unsteady flows of viscous incompressible fluids in a planar channel, when viscosity depends linearly on pressure, and a constant magnetic field is present. Exact expressions are derived for the dimensionless initial velocity field, the corresponding non-zero shear stress, and the problem is fully solved. To illustrate and highlight certain fluid behavior characteristics, modified Stokes’ problems are analyzed, and analytical expressions for the corresponding initial velocities are provided. Fo...r validation, the steady components are presented in two distinct forms, with their equivalence confirmed through graphical comparison. The effect of the magnetic field on the fluid behavior is explored and discussed visually. The results show that the fluid flows more slowly, and the steady-state is reached sooner when a magnetic field is applied.2010 Mathematics Subject Classification: 76A05.
0000-0002-9056-0911 
