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Journal : Indonesian Journal of Aerospace

Integrated Numerical Investigation on the Aerodynamics Characteristic and Vortex Development of Airfoil using Spalart-Allmaras Model Dinaryanto, Okto; Jalaali, Bahrul; Hisyam, Muhammad; Wibowo, Teguh
Indonesian Journal of Aerospace Vol. 21 No. 1 (2023): Indonesian Journal of Aerospace
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/ijoa.2023.116

Abstract

In this paper, the numerical simulation successfully obtained good results in analyzing fluid flow over the airfoil. Detailed explanations of simulation steps were also presented. The flow characteristics over three airfoil models were numerically simulated in this work: NACA0021, NACA2409, NACA2409+Fowler flap. The reliable Spalart-Allmaras (S-A) turbulent model was used and validated using reported data from experimental in terms of lift and drag coefficients. In this regard, the discrepancies of less than 10% were obtained for both coefficients, respectively. The boundary layer separation, vortex development, and air separation were clearly captured. The results of symmetric airfoil showed that the vortex shedding regimes occurred at α = 8o, and the stall critical-angle was about 14o. The value was higher for the NACA2409, where the airflow exhibited a relatively more stable behavior. Moreover, it is evident that flap addition altered lift-drag characteristics. The value of the lift-to-drag ratio increased due to the increase of Cl and the reduction of Cd. The parametric study was done on the α and flap deflection angle to attain the desirable airfoil configuration. The maximum result of airfoil configuration was obtained on the NACA2409 at α = 12o with 100 flap deflection angle while it enhanced the lift coefficient by about 54%. This result strengthens the robustness of the S-A turbulence model and projects the use of the S-A model for dealing with the aerodynamics analysis. This study is beneficial for initial aircraft design on the aerodynamics aspect of a wing.
Co-Authors Abdul Latif Abraham Abraham Aby Prayoga Agamawan, Lalu Panji I. Agus Kristiyanto Agus, Al Ihksan Agus, Al Ikhsan Ahmad Syahrizal Alauna Mizanul Abror Albida Rante Tasak, Albida Rante Alizan Satria Putra Amir, Haeril Anita Fibonacci, Anita Asmiddin, Ahmad Maulid Atmajaya, Onesimus Dhyas Dwi Baransano, Natan Bara’padang, Barnabas Barnabas Barapadang Claudius Hendraman B. Tobi Dimara, Makdalena Irpa Dodiman, Dodiman Ervina Indrayani Fadhilah Fadhilah Fahrul Razi Frans Augusthinus Asmuruf Handayani, Sri Haryati, Kristina Hasanuddin Hasanuddin Herlini Puspika Sari Herlini Puspita Sari Huwae, Jilian Risky Ibrah Safirah Israwan, LM. Fajar Jalaali, Bahrul Jovanika Clarisa Permesti Kainama, Tamara Louraine Jeanette Kalor, John D Kardiyanto, Deddy Whinata Liyatin Gea Lolita Tuhumena Lubna Nurlandari Maklon Warpur Manalu, Khristhoper Aris Arianto Mantayborbir, Vyona Mas, Haris Saputra Miftah Miftah Misbach, Imam Muhammad Cahya Novarian Muhammad Dyan Akram Musakar, Rafika Dewitasari Kahar Mustika Endah Pratiwi N, Nasrullah Nabilawti, Hijrah Nada Pertiwi Papriani Nasrullah Nasrullah Nazifah Fitri Annisa Nurilfayati, Nurilfayati Nurwahid, Hidayat Okto Dinaryanto Papriani, Nada Pertiwi Pattola Paulangan, Yunus Pajanjan Pertiwi, Widya Nur Bhakti Popi Ida Laila Ayer Putri Hadi Utami Rahmat Hidayat Raihan Difari Ramba, Fitria Yunia RARA, ABD RAHMAN Rasyid M Akib, Abd. Rejauw, Korinus Rhozan Firmansyah Rosyadi, Rosyadi Rumahorbo, Basa Tunggul Rumanasen, David Waranda S, Armita Safruddin Samosir, Restika Satyanegara, Diqbal Shindy Dwita Nuansari Sihombing, Yosina Arni Sitti Rosnafi’an Sumardi Sri Pujiyati Suarni S. Sumardi, Sitti Rosnafi'an Sumardi, Sitti Rosnafian Suntin, Suntin Suswita Tangkelayuk, Herman Teguh Wibowo Umbekna, Sara Waum, Ida Winda Ade Fitriya B Yenusi, Tien Nova B.