Numerical analysis of a propeller in ground effect
Apstrakt
Detailed studies of propeller flows are regaining both interest and significance worldwide, as the number of their different design and applications (particularly for futuristic urban air vehicles) continues to grow. An additional distinctive characteristic of small-scale unmanned air vehicles (UAV) propellers is that they are meant to operate in a wide range of (previously considered atypical) operating conditions, including backward flight, flight in the vicinity of obstacles,
hard/ground surfaces, etc. These specific requirements raise the issue of the effects of ground proximity on their aerodynamic performance. This paper computationally investigates flows around a small-scale, custom-made propeller in ground effect. Different ground distances are considered and novel thrust and power relations (dependencies) on them are proposed. In order to obtain sufficiently reliable and accurate results and capture the most significant flow features, Reynolds-averaged Navier-Stokes (RANS) eq...uations are solved by finite volume method. In addition, interesting flow visualizations are presented. Although the obtained thrust trend correlates well with the conventionally used semi-empirical formula, more realistic estimations are obtained for small ground distances. Furthermore, the positive effects of ground vicinity on rotor aerodynamic performances are once again confirmed and quantified.
Ključne reči:
propeller / turbulence / RANS / IGEIzvor:
Scientific Technical Review, 2022, 72, 2, 8-13Izdavač:
- Belgrade : Military Technical Institute - VTI
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200105 (Univerzitet u Beogradu, Mašinski fakultet) (RS-MESTD-inst-2020-200105)
Kolekcije
Institucija/grupa
Mašinski fakultetTY - JOUR AU - Svorcan, Jelena AU - Kovačević, Aleksandar AU - Ivanov, Toni AU - Simonović, Aleksandar PY - 2022 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4210 AB - Detailed studies of propeller flows are regaining both interest and significance worldwide, as the number of their different design and applications (particularly for futuristic urban air vehicles) continues to grow. An additional distinctive characteristic of small-scale unmanned air vehicles (UAV) propellers is that they are meant to operate in a wide range of (previously considered atypical) operating conditions, including backward flight, flight in the vicinity of obstacles, hard/ground surfaces, etc. These specific requirements raise the issue of the effects of ground proximity on their aerodynamic performance. This paper computationally investigates flows around a small-scale, custom-made propeller in ground effect. Different ground distances are considered and novel thrust and power relations (dependencies) on them are proposed. In order to obtain sufficiently reliable and accurate results and capture the most significant flow features, Reynolds-averaged Navier-Stokes (RANS) equations are solved by finite volume method. In addition, interesting flow visualizations are presented. Although the obtained thrust trend correlates well with the conventionally used semi-empirical formula, more realistic estimations are obtained for small ground distances. Furthermore, the positive effects of ground vicinity on rotor aerodynamic performances are once again confirmed and quantified. PB - Belgrade : Military Technical Institute - VTI T2 - Scientific Technical Review T1 - Numerical analysis of a propeller in ground effect EP - 13 IS - 2 SP - 8 VL - 72 DO - 10.5937/str2202008S ER -
@article{ author = "Svorcan, Jelena and Kovačević, Aleksandar and Ivanov, Toni and Simonović, Aleksandar", year = "2022", abstract = "Detailed studies of propeller flows are regaining both interest and significance worldwide, as the number of their different design and applications (particularly for futuristic urban air vehicles) continues to grow. An additional distinctive characteristic of small-scale unmanned air vehicles (UAV) propellers is that they are meant to operate in a wide range of (previously considered atypical) operating conditions, including backward flight, flight in the vicinity of obstacles, hard/ground surfaces, etc. These specific requirements raise the issue of the effects of ground proximity on their aerodynamic performance. This paper computationally investigates flows around a small-scale, custom-made propeller in ground effect. Different ground distances are considered and novel thrust and power relations (dependencies) on them are proposed. In order to obtain sufficiently reliable and accurate results and capture the most significant flow features, Reynolds-averaged Navier-Stokes (RANS) equations are solved by finite volume method. In addition, interesting flow visualizations are presented. Although the obtained thrust trend correlates well with the conventionally used semi-empirical formula, more realistic estimations are obtained for small ground distances. Furthermore, the positive effects of ground vicinity on rotor aerodynamic performances are once again confirmed and quantified.", publisher = "Belgrade : Military Technical Institute - VTI", journal = "Scientific Technical Review", title = "Numerical analysis of a propeller in ground effect", pages = "13-8", number = "2", volume = "72", doi = "10.5937/str2202008S" }
Svorcan, J., Kovačević, A., Ivanov, T.,& Simonović, A.. (2022). Numerical analysis of a propeller in ground effect. in Scientific Technical Review Belgrade : Military Technical Institute - VTI., 72(2), 8-13. https://doi.org/10.5937/str2202008S
Svorcan J, Kovačević A, Ivanov T, Simonović A. Numerical analysis of a propeller in ground effect. in Scientific Technical Review. 2022;72(2):8-13. doi:10.5937/str2202008S .
Svorcan, Jelena, Kovačević, Aleksandar, Ivanov, Toni, Simonović, Aleksandar, "Numerical analysis of a propeller in ground effect" in Scientific Technical Review, 72, no. 2 (2022):8-13, https://doi.org/10.5937/str2202008S . .