Yunan Yang - Adjoint Direct Simulation Monte Carlo for Optimization and Control of Rarefied Flows

Recorded 20 May 2026. Yunan Yang of Cornell University presents "Adjoint Direct Simulation Monte Carlo (DSMC) for Optimization and Control of Rarefied Flows" at IPAM's Multi-Fidelity Methods to Enable Robust Optimization and Real-Time Control of Fusion Processes Workshop.
Abstract: We derive adjoint equations for Direct Simulation Monte Carlo (DSMC) methods applied to the spatially inhomogeneous Boltzmann equation. The formulation incorporates spatial transport and a range of boundary conditions, including periodic boundaries, specular and thermal reflection, and prescribed inflow. The resulting adjoint system enables efficient gradient evaluation for quantities of interest defined through particle-based simulations. Numerical experiments validate the accuracy of the adjoint formulation and demonstrate its use in sensitivity analysis and gradient-based optimization. This work provides a foundation for integrating kinetic-scale particle methods into multi-fidelity optimization and control frameworks, with potential applications to rarefied plasma flows and edge physics in fusion devices.
Learn more online at: https://www.ipam.ucla.edu/programs/workshops/workshop-iv-multi-fidelity-methods-to-enable-robust-optimization-and-real-time-control-of-fusion-processes/?tab=overview Receive SMS online on sms24.me

Watch on YouTube

Subscribe on YouTubeReaderBot

TubeReader video aggregator is a website that collects and organizes online videos from the YouTube source. Video aggregation is done for different purposes, and TubeReader take different approaches to achieve their purpose.

Our try to collect videos of high quality or interest for visitors to view; the collection may be made by editors or may be based on community votes.

Another method is to base the collection on those videos most viewed, either at the aggregator site or at various popular video hosting sites.

TubeReader site exists to allow users to collect their own sets of videos, for personal use as well as for browsing and viewing by others; TubeReader can develop online communities around video sharing.

Our site allow users to create a personalized video playlist, for personal use as well as for browsing and viewing by others.

@YouTubeReaderBot allows you to subscribe to Youtube channels.

By using @YouTubeReaderBot Bot you agree with YouTube Terms of Service.

Use the @YouTubeReaderBot telegram bot to be the first to be notified when new videos are released on your favorite channels.

Look for new videos or channels and share them with your friends.

You can start using our bot from this video, subscribe now to Yunan Yang - Adjoint Direct Simulation Monte Carlo for Optimization and Control of Rarefied Flows

What is YouTube?

YouTube is a free video sharing website that makes it easy to watch online videos. You can even create and upload your own videos to share with others. Originally created in 2005, YouTube is now one of the most popular sites on the Web, with visitors watching around 6 billion hours of video every month.