The Impact of Lower Atmosphere Forecast Uncertainties on WACCM‐X Prediction of Ionosphere‐Thermosphere System During Geomagnetic Storms by Wonseok Lee, In‐Sun Song, Ja Soon Shim, Guiping Liu, Geonhwa Jee

“…The MLT wind uncertainties are correlated with gravity wave drag (GWD), suggesting that the uncertainties in GWD can be one of the major sources of IT forecast errors.…”
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Aerodynamic Optimization Design of Duct Body Structure for Coaxial Rotor Unmanned Aerial Vehicles by Du Siliang, Zha Yi, Zhao Qijun

“…The numerical simulation results show that the modified duct body has a significant increase in aerodynamic efficiency and a 4.5% increase in power load compared to the unmodified one. …”
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Influence of dual stratification on the magnetohydrodynamic flow of Jeffrey nanofluid over an exponentially stretching permeable sheet with viscous dissipation and Joule heating by M. Siva Sankari, M. Eswara Rao, Fuad A. Awwad, Emad A. A. Ismail, O. D. Makinde, Waris Khan

“…Nanoparticles show superior potential for enhancing thermal properties compared to conventional particle–liquid suspensions. …”
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Crystal plasticity modeling for grain size and texture effects on laser shock clinching of ultra-thin foils by Yaxuan Hou, Zhong Ji, Haiming Zhang

“…The results show that greater strain in copper foils occurs in the region contacting the inner wall of the perforated sheet. …”
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Structural optimization design of novel Senegal vertical axis wind turbine by Zheng LI, Long ZHAO, Jie ZHANG, Qilong XIE, Hexu SUN

“…Firstly, the curvature of the rotor blades was optimized using the Bessel curve function and modeled using the SOLIDWORKS software, resulting in four different curvature curves for the blades; Secondly, the parameters such as wind energy utilization, moment coefficient, and their pressure distribution and velocity distribution plots at different tip speed ratios were compared and analyzed using computational fluid dynamics (CFD) model, and their wake characteristics were also compared; Finally, an experimental platform was built to verify the rationality of the simulation. The results show that the optimized blade type effectively improves the wind energy utilization of the modified Senegal drag type vertical axis wind turbine, and the A4 type blade has a high wind energy utilization of 26.31%, which is about 36% higher than that of the A1 type wind turbine.The designed novel wind turbine structure has superior power generation performance, which provides some reference for program design in the field of vertical axis wind turbines.…”
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Experimental Study of Single Expansion Ramp Nozzle Performance Using Pitot Pressure and Static Pressure Measurements by Sergio Nicolas Pachón Laitón, João Felipe de Araujo Martos, Israel da Silveira Rego, George Santos Marinho, Paulo Gilberto de Paula Toro

“…In order to overcome the drag at hypersonic speed, hypersonic flight vehicles require a high level of integration between the airframe and the propulsion system. …”
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Energy transfer aspects of chemically reactive Casson fluid between a conical gap of cone-disk system with multiple rotations by M. Qamar, M. Khan, A.S. Alqahtani, M.Y. Malik

“…Additionally, the magnetic field parameter shows an increasing trend for drag friction, while a reverse trend can be observed for heat transportation rate. …”
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Energy and Food Price Shocks in the Euro Area by Silke Tober

“…In contrast to the United States, the euro area shows no signs of overheating or excessive wage increases. …”
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Public safety in the conditions of martial law and mental warfare by S. O. Tkachenko, A. S. Diadin

“…The mental war for people’s minds means that we must make people immune to the enemy’s “new weapons”, make the enemy’s rules ineffective and carefully leave their field, and in the long run, drag it into ours. For this, we need to create a stable and clear ideology that will provide answers to certain questions and show the path we should follow, the goal we should strive for. …”
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Experimental Investigations of Self-adjusting Bionic Flaps on Low-aspect Ratio Wings by A. Verma, V. Kulkarni, S. Shinde

“…Three flap chord lengths (0.12c, 0.15c, and 0.20c) are examined at various chord-wise positions (0.3c to 0.8c). Results show that the optimal performance enhancement is achieved when flaps cover 80% of the wingspan for AR 2.0 and 70% for AR 1.0. …”
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In-Line and Cross-Flow Coupling Vibration Response Characteristics of a Marine Viscoelastic Riser Subjected to Two-Phase Internal Flow by Xueping Chang, Jinming Fan, Wenwu Yang, Yinghui Li

“…Two distributed and coupled van der Pol wake oscillators are utilized to model the fluctuating lift and drag coefficients, respectively. The finite element method is adopted to directly solve the highly coupled nonlinear fluid-structure interaction equations. …”
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Politica e cultura nell’Italia repubblicana : memoria e interpretazioni della Resistenza nella galassia azionista by Leonardo Casalino

“…But the overall interpretation of the Resistance by former members of the Partito d’Azione shows the impossibility of protracting an experience that had nonetheless allowed to drag Italian society away from the passivity and resignation weighing on its collective identity.…”
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Analysis of the Noise Characteristic of Automotive Engine Timing Chain System by Xu Shuxin, Ye Bin, Fan Chengyan, Meng Fanzhong

“…With the cylinder head anti drag system test bench,by using orthogonal design method,the noise characteristics of the engine in different lubricating oil temperature,oil pressure,rotational speed of the crankshaft are tested. …”
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Interplanetary Influence on Thermospheric Mass Density: Insights From Deep Learning Analyses by Wenbo Li, Libo Liu, Yiding Chen, Yi‐Jia Zhou, Huijun Le, Ruilong Zhang

“…We explore the TMD features under different solar‐terrestrial environmental conditions and discuss the effects of various inputs by comparing the DL simulation results with satellite observations from Gravity Recovery and Climate Experiment‐A and Swarm‐A, as well as the simulation results from Jacchia‐Bowman 2008, Naval Research Laboratory Mass Spectrometer Incoherent Scatter radar model 2.1, and Drag Temperature Model 2013. These results show that the DL model can better capture the TMD features after adding IEI. …”
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Double diffusive MHD stagnation point flow of second grade fluid in non-Darcy porous media under radiation effects by Walid Aich, Amir Abbas, Adebowale Martins Obalalu, Walid Hassen, Lotfi Ben Said, Rejab Hajlaoui, Lioua Kolsi

“…They are vital in the development of drag-reducing agents, damping and braking systems, food manufacturing, personal protective equipment, and the printing industry. …”
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Numerical Investigation into Flutter and Flutter-Buffet Phenomena for a Swept Wing and a Curved Planform Wing by Mario Rosario Chiarelli, Salvatore Bonomo

“…Analysing the performances of the two wings demonstrated that in transonic flight conditions, a noticeable drag reduction can be obtained by adopting a curved planform wing. …”
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Boundary Layer Flow and Heat Transfer with Variable Fluid Properties on a Moving Flat Plate in a Parallel Free Stream by Norfifah Bachok, Anuar Ishak, Ioan Pop

“…Moreover, fluid with constant properties shows drag reduction characteristics compared to fluid with variable viscosity.…”
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Comparison of Empirical and Theoretical Models of the Thermospheric Density Enhancement During the 3–4 February 2022 Geomagnetic Storm by Jianhui He, Elvira Astafyeva, Xinan Yue, Nicholas M. Pedatella, Dong Lin, Timothy J. Fuller‐Rowell, Mariangel Fedrizzi, Mihail Codrescu, Eelco Doornbos, Christian Siemes, Sean Bruinsma, Frederic Pitout, Adam Kubaryk

“…The resulting increase in atmospheric drag led to 38 out of the 49 satellites reentering the atmosphere in the following days. …”
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The Effect of Boattail Angles on the Near-Wake Structure of Axisymmetric Afterbody Models at Low-Speed Condition by The Hung Tran

“…Flow behavior on boattail surface should be accounted as an important parameter affecting the wake width and drag of the model. Power spectral density and proper orthogonal decomposition (POD) analyses showed that a Strouhal number of StD=0.2 dominated for the boattail model up to 16°. …”
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Impact of Urban Surface Roughness Length Parameterization Scheme on Urban Atmospheric Environment Simulation by Meichun Cao, Zhaohui Lin

“…The comparison of the two sets of simulation results shows that all the roughness parameters computed from the EXP run are larger than those in the CTL run. …”
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