Invited Talks, Presentations, and Posters

• Tohidi, A., “A Correction Factor for Tachikawa Number: Towards Generalization of the Role of Particle Shape and Initial Orientation in Estimating the Total Kinetic Energy”, American Physical Society (APS). Washington D.C., USA (2023).

• A. Cervantes, A. Tohidi, A. Kochanski, “Numerical Modeling of Firebrand Transport at Large Spatiotemporal Scales”, 14th International Symposium on Fire Safety Science, International Association of Fire Safety Science (IAFSS), Tsukuba, Japan (2023).

• A. Tohidi, “Modeling Wildfire Behavior and Wildfire Impacts: Progress and Opportunities”, (Invited Talk) Department of Mechanical Engineering, University of California, Berkeley, CA, USA (2023).

• A. Tohidi, “Wildfire Modeling: Challenges, Progress, and Opportunities”, (Invited Talk) Civil and Environmental Engineering Department, Stanford University, CA, USA (2023).

• A. Tohidi, “The Role of Particle Dynamics in Wildre Behavior and Impacts”,(Invited Talk) at Northern California-Nevada Society of Fire Protection Engineers (SFPE), San Francisco, CA, USA (2023).

• A. Cervantes, and A. Tohidi, “Numerical Modeling of Firebrand Transport by Wildfire Plume.” Industry Advisory Board (IAB) Meeting, NSF-IUCRC Wildfire Interdisciplinary Research Center (WIRC), (2023).

• A. Tohidi, “Large Scale Dispersion of Pathogen-Laden Aerosols in Wildfire Plume”,(Invited Talk) at SJSU’s RSCA in Five on Big Data and Data Science, San José State University, San José, CA, USA (2022).

• A. Tohidi, “Firebrand shower, different phases and a new approach in modeling”,(Invited Talk) at the California Fire Science Seminar Series, University of California Berkeley, CA, USA (2022).

• Seto, K., and Tohidi, A., “A Multiphase Approach in Modeling Heat Transfer from the Assemblage of Firebrands” American Physical Society (APS). Indianapolis, IN, USA (2022).

• Kobziar, Leda N., Samantha L. N. Fox, Kendra Walters, Phinehas Lampman, Ali Tohidi, Adam K. Kochanski, Antonio Cervantes, et al. “Catching, Counting, and Considering the Microbial Life in Smoke.” Virginia Tech CeZAP Distinguished Speaker Series (2022).

• L. N. Kobziar, P. Lampman, R. Moore, D. C. Vuono, A. T. Hudak, B. Gullet, J. Aurell, R. McCarley, A. Tohidi, A. K. Kochanski, A. Watts, and B. Christner, “Biological Smoke Emission Factors: The Foundation for a Terrestrial-Atmospheric Exchange Budget for Microbes Aerosolized by Wildland Fires”, American Geophysical Union (AGU) Fall Meeting (2022).

• A. Tohidi, “Modeling firebrand transport and thermal exposure during firebrand showers”, American Geophysical Union (AGU), Fall 2021 Meeting, (Invited Oral Presentation) (2021).

• Kobziar, Leda N., Adam K. Kochanski, Ali Tohidi, David C. Vuono, Rachel Moore, Brent Christner, Adam Watts, et al.“Is Wildland Fire a “biological Volcano”? Tracking Smoke as a Dispersal Vector for Plant Pathogens and Other Organisms.” INRAE – French National Institute for Agriculture, Food and Environment Pondering Beyond Seminar (2021).

• L. N. Kobziar, D. C. Vuono, R. Moore, T. Dean, D. Betancourt, A. Watts, B. Christner, J. Aurell, B. Gullet, A. K. Kochanski, and A. Tohidi, “High-Intensity Forest Fires Emit High Concentrations of Diverse, Viable, and Ice-Nucleating Bioaerosols.”American Association for Aerosol Research (AAAR) 39th Annual Conference (2021).

• A. Tohidi, “The physics of wildfires”, San Francisco Regional Mensa , Virtual Event (2020).

• A. Tohidi, “Wildfire modeling challenges and current methodologies”, Fire Safe San Mateo County, (Invited Talk),Stanford University, CA, USA (2019).

• A. Tohidi, “Review of Fire Whirl Science”, Fire Weather Research Workshop, (Invited Talk), San Jose State University, San Jose, CA, USA (2019).

• A. Tohidi, N.B. Kaye, M. J. Gollner “Cross-flow shearing effects on the trajectory of highly buoyant bent-over plumes”, 70th Annual Meeting of the APS Division of Fluid Dynamics, Denver, CO, USA (2017).

• A. Tohidi, S. Caton, M. Gollner, N.B. Kaye, Nelson Bryner, “Firebrand formation and transport, a critical mechanism of wildfire propagation”, Fire Prediction Across Scales, Initiative on Extreme Weather & Climate, Columbia University, New York, NY, USA (2017).

• N. B. Kaye, A. Tohidi, “Ember Flight Modeling and Experiments”, The 2017 Americas Conference on Wind Engineering (ACWE), University of Florida, Gainesville, FL, USA (2017).

• A. Tohidi, “Modeling the Generation and Transport of Firebrands in Wildfires”, The Annual Joint, University of Maryland College Park, John Hopkins (CEAFM), and George Washington University, Fluid Mechanics Symposium (Invited Talk), the University of Maryland at College Park, MD, USA (2017).

• A. Tohidi, “Modeling Firebrand Shower and the Subsequent Fire Spotting Phenomenon”, Fluid Dynamics Reviews Seminar Series, The Burgers Program For Fluid Dynamics (Invited Talk), the University of Maryland at College Park, MD, USA (2016).

• A. Tohidi, N.B. Kaye, “Experimental & Numerical Modeling of Non-combusting Model Firebrands’ Transport”, 69th Annual Meeting of the APS Division of Fluid Dynamics, Portland, OR, USA (2016).

• A. Tohidi, N. B. Kaye, “An Experimental Study of Rod-Like Debris Flight with Particular Application to Fire Spotting”, Engineering Mechanics Institute Conference (EMI), Vanderbilt University, USA (2016).

• A. Tohidi, N. B. Kaye, “An Experimental Study of Stochastic Nature of Firebrands’ Flight”, 5th International Fire Behavior and Fuels Conference, Portland, Oregon, USA (2016).

• A. Tohidi, N.B. Kaye, “Trajectory of a plume in a power-law velocity profile”, 68th Annual Meeting of the APS Division of Fluid Dynamics, Boston, MA, USA, (2015). LES simulation with OpenFOAM.

• N. B. Kaye, A. Tohidi, “Bent-over plume models for large-area highly-buoyant turbulent plumes”, 67th Annual Meeting of the APS Division of Fluid Dynamics, San Francisco, CA, USA (2014).

• A. Tohidi, N. B. Kaye, “Comparison of Experiments with Stochastic Modeling of Cylindrical Debris Flight”, Engineering Mechanics Institute Conference (EMI), McMaster University, Canada (2014).

• A. Tohidi, N. B. Kaye, “Characterization of Firebrand Geometry and Flight Dynamics”, Large Wildland Fire Conference: Social, Political and Ecological Effects, Missoula MT, USA (2014).

• A. Tohidi, “Diffusion Characteristics of a Jet in Co-Flow”, Environmental Fluid Mechanics Course, Semester Project, Clemson SC, USA (2013).

• A. Tohidi, “Underlying Flushing Mechanisms of a Dense Fluid from a Square Canyon Using Fourier Analysis”, Environmental Fluid Mechanics Course, Semester Project, Clemson SC, USA (2013). Simulation using OpenFOAM.

• A. Tohidi, “The Surface Wave Theory”, Advanced Fluid Mechanics, Semester Project, Clemson SC, USA, (2012).

• A. Tohidi, “Applications of Probability Density Function (PDF) Modeling and Lagrangian Solutions in Turbulence Modeling of Reactive Flows”, Turbulence Theory Course, Semester Project, Clemson SC, USA (2012).

• A. Tohidi, A. Safaei, M. Jamali, “Numerical & experimental investigation of hydrodynamic characteristics of intrusive gravity currents in stratified media”, 9th International Congress of Civil Engineering, Isfahan Iran (2012). Simulation using an in-house reservoir hydrodynamic code.

• A. Tohidi, “Wind Induced Up-Going Currents in Aquatic Canopy Zones”, Oral M.Sc. Thesis Defense, Sharif University of Technology, Tehran, Iran (2012).

• A. Tohidi, “Surface Cooling Induced Thermal Instabilities at Air-Water Interface”, Environmental Fluid Mechanics, Seminar Session, Sharif University of Technology, Tehran, Iran (2011). Simulation with an in-house reservoir hydrodynamic code.

• A. Tohidi, M. Tofighi, M.Fazeli “Investigating the Accuracy of High Order Finite Difference Schemes Compared to Integrated QUICK & QUICKEST Schemes with ULTIMATE Flux Limiter”, Environmental Fluid Mechanics Laboratory, Seminar Sessions, Sharif University of Technology, Tehran, Iran (2010). Sample simulation

• Siamak Nezhadi, A. Tohidi, A. Jelvehpour, “Finite Element Theory, Convergence using Functional Analysis”, Finite Element Seminars, Sharif University of Technology, Tehran, Iran (2010).

• A. Tohidi, “Coupling Finite Element Methods, a Review”, Civil Engineering Seminar, Sharif University of Technology, Tehran, Iran (2009).