The main objectives of the doctoral training in the doctoral program "Fluid Mechanics" at the Department of "Hydroaerodynamics and Hydraulic Machines" are:
- to prepare highly qualified specialists in the field of continuum mechanics with a wide range of opportunities for solving various complex engineering tasks in industry;
- to prepare highly qualified personnel both for conducting in-depth scientific research and for ensuring the educational process in schools and universities with a technical focus;
The existing prerequisites for achieving the objectives are:
- the doctoral program in "Fluid Mechanics" is accredited by the "National Agency for Evaluation and Accreditation" with the highest rating, which is a serious prerequisite for the training of doctoral students in the program at a very high level;
- The supervision of doctoral students is carried out by established habilitated lecturers in the same scientific specialty with significant experience in science and engineering practice – http://hadhm.tu-sofia.bg/hr.html
- the department has a 75-year history in training engineering personnel. Currently, more than 80 dissertations have been defended in the department's doctoral programs - http://hadhm.tu-sofia.bg/doctorants.html;
- the department has the necessary infrastructure to conduct fundamental and experimental research in the field of fluid mechanics at a high, modern level;
- the connection with industry is expressed in solving specific engineering problems closely related to the focus of the doctoral program;
Laboratories:
- "Classical Fluid Mechanics";
- Experimental Fluid Mechanics – http://hadhm.tu-sofia.bg/lab_efm.html
- Computational Hydroaerodynamics – http://hadhm.tu-sofia.bg/lab_cfd.html
The main directionsin which doctoral training is developed are:
- Numerical modeling and simulation of heat and mass transfer processes;
- Assessment of indoor environment quality and its impact on occupants;
- Assessment, analysis, and commissioning of heating, ventilation, and air conditioning systems;
- Analysis and assessment of energy production from renewable energy sources, including wind, solar, water, biomass;
- Study of two-phase flows and mixtures;

