IHE / Employees / Researchers and Lecturers / Pietrak Karol

Pietrak Karol

PhD, MSc, Assistant Professor - Thermodynamics division,  room 205, e-mail: karol.pietrak@itc.pw.edu.pl phone: (48) 22 234 52 09

Office hours:

  • Tuesday 11:00

Research interests:

  • Numerical methods
  • Inverse thermal problems
  • Artificial intelligence methods in optimization, modeling and data analysis
  • Heat transfer in heterogeneous media
  • Measurement techniques

Topics of intermediate, engineering and master's projects:

  • Write a program for the analysis of composite structures based on SEM images (own codes in MATLAB, Octave)
  • Particle swarm optimization methods in optimization and inverse problem solution - types, comparison of performance, history (literature study + computation in Matlab or PSwarm)
  • Artificial neural networks in heat transfer problems (literature study + possible computation in MATLAB)
  • Gradientless methods of optimization - classification, history, applications (literature study + possible computation in Matlab)
  • Gradient methods for minimization of linear and nonlinear least squares problems - classification, history, applications (literature study + possible computation in Matlab)
  • Mathematical methods of computed tomography - principles, history and features (literature study + applying one method in MATLAB)
  • Deep learning - history, principles and application to heat transfer and power engineering problems
  • Measurement uncertainty and measurement error - definitions, misunderstandings, classifications and estimation methods (writing a guide for other students based on newest norms)
  • Measures of accuracy of estimations and statistical correlation factors - definitions, types, applications
  • Markov Chain Monte Carlo Methods - their history, principles, classification and application in thermal problems (literature study + possible computation in Matlab)
  • POD surrogates of complex systems - principles and advantages of the method in its application to heat transfer engineering
  • Soft computing - definition, history, classification, applications (with special regard to heat and power engineering)

 Teaching:

  • Computer science 1 (lab)
  • Numerical methods in heat transfer (lab)
  • Intergrated laboratory (lab)
  • Fluid and thermal measurements (lab)
  • Thermodynamics 2 (lab)
  • Heat transfer (tutorials)

Publications:

Journals:

  • Pietrak K., Łapka P., Kujawińska M.: Inverse analysis for the identification of temporal and spatial characteristics of a short super-Gaussian laser pulse interacting with a solid plate, in: International Journal of Thermal Sciences, vol. 134, 2018, pp. 585-593, DOI:10.1016/j.ijthermalsci.2018.08.040
  • Pietrak K.: The foundations of socionics – A review, in: Cognitive Systems Research, vol. 47, 2018, pp. 1-11, DOI:10.1016/j.cogsys.2017.07.001
  • Pietrak K., Wiśniewski T., Kubiś M.: Application of flash method in the measurements of interfacial thermal resistance in layered and particulate composite materials, in: Thermochimica Acta, no. 654, 2017, pp. 54-64, DOI:10.1016/j.tca.2017.05.007
  • Pietrak K., Kubiś M., Langowski M., Kropielnicki M., Wultański P.: Effect of particle shape and imperfect filler-matrix interface on effective thermal conductivity of epoxy-aluminum composite, in: Composites, Theory and Practice, PTMK, no. 17:4, 2017, pp. 183-188
  • Łapka P., Furmański P., Bugaj M., Cieślikiewicz Ł., Pietrak K., Kubiś M., Wiśniewski T.: Walidacja modelu przepływu ciepła i wilgoci przez ubiór ochronny, in: Zeszyty Naukowe SGSP, vol. 58 (t. 2), no. 2, 2016, pp. 231-251
  • Pietrak K., Kubiś M., Wiśniewski T.: Badania właściwości cieplnych materiałów ochron osobistych, in: Zeszyty Naukowe Szkoły Głównej Służby Pożarniczej, Szkoła Główna Służby Pożarniczej, vol. 58 (t. 2), no. 2, 2016, pp. 173-192
  • Pietrak K., Wiśniewski T.: A review of models for effective thermal conductivity of composite materials, in: Journal of Power Technologies, Politechnika Warszawska Instytut Techniki Cieplnej, vol. 95, no. 1, 2015, pp. 14-24
  • Jarzębowska E., Pietrak K.: Constrained Mechanical Systems Modeling and Control: a Free-Floating Space Manipulator Case as a Multi-Constrained System, in: Robotics and Autonomous Systems, Elsevier, vol. 62, no. 10, 2014, pp. 1353-1360, DOI:10.1016/j.robot.2014.04.004.
  • Pietrak K., Wiśniewski T.: Methods for experimental determination of solid-solid interfacial thermal resistance with application to composite materials, in: Journal of Power Technologies, Politechnika Warszawska Instytut Techniki Cieplnej, vol. 94, no. 4, 2014, pp. 270-285

Conference proceedings:

  • Cieślikiewicz Ł., Wasik M., Kubiś M., Bugaj M., Łapka P., Pietrak K., Wiśniewski T., Furmański P., Seredyński M.: Developement of the experimental stand with centrally located specimen for investigation of heating and drying proces in the porous building materials, in: Proceedings of the 5th International Conference Contemporary Problems of Thermal Engineering. Energy Systems in the Near Future: Energy, Exergy and Economics / Stanek Wojciech [i in.] (eds.), 2018, Institute of Thermal Technology, ISBN 978-83-61506-46-1, pp. 169-177
  • Cieślikiewicz Ł., Łapka P., Wasik M., Kubiś M., Pietrak K., Wiśniewski T., Furmański P., Seredyński M.: Development of the experimental stand for investigation of heating and drying phenomena in the porous building materials with one surface of the sample exposed to the flowing air, in: Heat Transfer and Renewable Sources of Energy 2018: Book of Abstracts / Kujawa Tomasz, Stachel Aleksander A., Zapałowicz Zbigniew (eds.), 2018, Wydawnictwo Uczelniane Uczelniane, ISBN 978-83-7663-264-3, pp. 109-110
  • Furmański P., Seredyński M., Łapka P., Cieślikiewicz Ł., Wasik M., Kubiś M., Pietrak K., Wiśniewski T.: A model of heat and moisture transfer in a building material during drying based on phase equilibrium in the moist region, in: Proceedings of the 5th International Conference Contemporary Problems of Thermal Engineering. Energy Systems in the Near Future: Energy, Exergy and Economics / Stanek Wojciech [i in.] (eds.), 2018, Institute of Thermal Technology, ISBN 978-83-61506-46-1, pp. 663-673
  • Pietrak K., Marek A., Łapka P.: Identification of high-energy laser pulse characteristics based on numerical heat transfer model and artificial neural networks, in: Proceedings of the 5th International Conference Contemporary Problems of Thermal Engineering. Energy Systems in the Near Future: Energy, Exergy and Economics / Stanek Wojciech [i in.] (eds.), 2018, Institute of Thermal Technology, ISBN 978-83-61506-46-1, pp. 199-206
  • Kubiś M., Pietrak K., Cieślikiewicz Ł., Łapka P., Furmański P., Wiśniewski T., Seredyński M., Wasik M.: Investigations on thermal anisotropy of ceramic bricks, in: Proceedings of the 5th International Conference Contemporary Problems of Thermal Engineering. Energy Systems in the Near Future: Energy, Exergy and Economics / Stanek Wojciech [i in.] (eds.), 2018, Institute of Thermal Technology, ISBN 978-83-61506-46-1, pp. 451-459
  • Pietrak K.: Determination of interfacial thermal resistance at epoxy/aluminium interface using laser flash method – numerical modelling and inverse problem solution, in: Numerical Heat Transfer 2015, Eurotherm Seminar No 109 Gliwice-Warsaw, Poland, 27-30 September 2015, Conference Proceedings 2015 / Nowak Andrzej J., Banaszek Jerzy, Šarler Bozidar (eds.), 2015, Silesian University of Technology and Warsaw University of Technology, ISBN 978-83-61506-30-0, pp. 257-265
  • Jarzębowska E., Pietrak K.: Control Oriented Dynamic Modeling Framework for Constrained Multibody Systems: A Case Study of a Free-Floating Space Manipulator, in: Proceedings of the 11th DSTA International Conference / Awrejcewicz Jan, Olejnik P., Mrozowski J. (eds.), 2011, Politechnika Łódzka, pp. 139-144

Oral presentations at conferences:

  • Pietrak K., Marek A., Łapka P.: Identification of high-energy laser pulse characteristics based on numerical heat transfer model and artificial neural networks, in: 5th International Conference Contemporary Problems of Thermal Engineering - CPOTE 2018, Gliwice, Poland, 18-21 September 2018
  • Łapka P., Pietrak K., Kujawińska M., Malesa M., Oniszk Ł.:  Development and validation of an inverse method for identification of thermal characteristics of a short laser pulse, ICCHMT 2018, Cracow, Poland, 21-24 May 2018
  • Kubiś M., Pietrak K., Cieślikiewicz Ł., Łapka P., Furmański P., Wiśniewski T., Seredyński M., Wasik M.: Investigations on thermal anisotropy of ceramic bricks, in: 5th International Conference Contemporary Problems of Thermal Engineering - CPOTE 2018, Gliwice, Poland, 18-21 September 2018
  • Pietrak K, Wiśniewski T S.: Thermal characterization of composite materials by the flash technique, in: Experimental Mechanics of Solids - 27th Symposium, Jachranka, Poland, October 19÷22, 2016
  • Pietrak K.: Determination of interfacial thermal resistance at epoxy/aluminium interface using laser flash method – numerical modelling and inverse problem solution, in: Numerical Heat Transfer 2015, Eurotherm Seminar No 109 Gliwice-Warsaw, Poland, 27-30 September 2015

Participation in larger research projects:

  • 2017-2020: DryWall - Development of an innovative technology for drying and insulating of walls (National Center for Research and Development, POIR.04.01.02-00-0099/16)
  • 2013-2016: INNOOS -Development of a system of innovative test stands for examination of personal protective equipment (National Center for Research and Development, O-ROB/ 0011/03/001)
  • 2012-2013: TERMET – New functional materials of increased thermal conductivity (EU project Innovative Economy, POIG.01.01.02-00-097/09)

Educational materials and notes: