Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Janusz Piechna"'
Publikováno v:
Archive of Mechanical Engineering, Vol vol. 70, Iss No 2, Pp 199-218 (2023)
Mass Spring Systems (MSS) are often used to simulate the behavior of deformable objects, for example in computer graphics (modeling clothes for virtual characters) or in medicine (surgical simulators that facilitate the planning of surgical operation
Externí odkaz:
https://doaj.org/article/33463bf8fe4a49e395b7155836f8d922
Autor:
Janusz Piechna
Publikováno v:
Energies, Vol 15, Iss 24, p 9353 (2022)
Compression by shock waves is a specific way of compressing gases. It has been practically applied for many years in supersonic flying objects. The idea of using this method in rotary engines is extremely appealing because one disk can replace severa
Externí odkaz:
https://doaj.org/article/0d29e058e20847c98731942352d0c6b7
Autor:
Jakub Broniszewski, Janusz Piechna
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 13, Iss 1, Pp 623-641 (2019)
This study investigates the impact of unsteady aerodynamic loads on the behavior of car dynamics during braking maneuvers. In the analysis, two independent solvers were coupled to solve an existing fluid structure interaction (FSI) problem. Transient
Externí odkaz:
https://doaj.org/article/a3d756581e074379916016eee8328e82
Publikováno v:
Energies, Vol 15, Iss 15, p 5543 (2022)
Generating aerodynamic downforce for the wheels on the front axle of a car is a much more difficult task than for the rear axle. This paper, submitted to the special issue of Energies “Future of Road Vehicle Aerodynamics”, presents an unusual sol
Externí odkaz:
https://doaj.org/article/4f18d34180e948af983e7d394bcd9070
Publikováno v:
Energies, Vol 15, Iss 15, p 5549 (2022)
This paper, submitted to the special issue of Energies “Future of Road Vehicle Aerodynamics”, proposes and justifies the use of an old idea of generating downforce by actively drawing air from under the car body and exhausting it to the outside.
Externí odkaz:
https://doaj.org/article/1f3d4038119148d88a632c9a3556f3db
Publikováno v:
Energies, Vol 15, Iss 2, p 619 (2022)
The purpose of this study was to investigate whether small plates covering the roof and the hood of the DrivAer estate vehicle can be used as airbrakes and increase its drag as well as the downforce. The presented results were obtained with the use o
Externí odkaz:
https://doaj.org/article/7217143e9ad449a2b786eb590907df1e
Autor:
Maciej Szudarek, Janusz Piechna
Publikováno v:
Energies, Vol 14, Iss 23, p 7907 (2021)
In time attack races, aerodynamics plays a vital role in achieving short track times. These races are characterized by frequent braking and acceleration supported by aerodynamic downforce. Usually, typical cars are modified for these races by amateur
Externí odkaz:
https://doaj.org/article/06c4076134b9462e98f81347f319e415
Autor:
Janusz Piechna
Publikováno v:
Energies, Vol 14, Iss 23, p 7887 (2021)
Comfort, safety, high travel speeds, and low fuel consumption are expected characteristics of modern cars. Some of these are in conflict with one other. A solution to this conflict may be time-varying body geometry realized by moving aerodynamic elem
Externí odkaz:
https://doaj.org/article/f4bba8fe8551435da9a2c143823d6c6d
Autor:
Krzysztof Kurec, Michał Remer, Jakub Broniszewski, Przemysław Bibik, Sylwester Tudruj, Janusz Piechna
Publikováno v:
Journal of Advanced Transportation, Vol 2019 (2019)
The aim of this study was to extend the safety limits of fast moving cars by the application, in a controlled way, of aerodynamic forces which increase as the square of a car’s velocity and, if left uncontrolled, dramatically reduce car safety. Thi
Externí odkaz:
https://doaj.org/article/97b6f037581b443d9eafa9e58c7bb596
Autor:
Janusz Piechna
Publikováno v:
Energies, Vol 14, Iss 13, p 3766 (2021)
This paper presents the concept of one possible but unconventional implementation of a Low Pressure Tube Transport (LPTT) system for a network with station-to-station distances of 300 km, based on the use of circular tunnels in which modular vehicles
Externí odkaz:
https://doaj.org/article/1b85442fe41a4207a07a1af29778fe05