Faculty Research and Data

 

Recent Submissions

  • Turbine blade cooling using Coulomb repulsion 

    Colannino, Joseph; Breidenthal, Robert E (2023-03-13)
    In order to preserve the integrity of the film cooling layer on a turbine blade, it is proposed that the blade is raised to a positive voltage with respect to a nearby negative electrode. The positive ions within the hot ...

  • A simple model of the hypersonic boundary layer 

    Breidenthal, Robert E (2023-03-13)
    A simple model of the hypersonic boundary layer is proposed. There are three assumptions: The mean velocity profile is linear, the total enthalpy is uniform, and turbulent transport is controlled by sonic eddies, whose ...

  • Design Considerations for the Implementation of a High-Field Side Transient CHI System on QUEST 

    Raman, Roger; Kuroda, K.; Hanada, K.; Ono, Masayuki; Hasegawa, M.; Onchi, T.; Ikezoe, R.; Idei, H.; Ido, T.; Rogers, John A. (2022-08)
    Transient Coaxial Helicity Injection, a method first developed on the small HIT-II experiment and then validated on the much larger NSTX device, is a method to initiate an inductive-like tokamak plasma discharge without ...

  • Transient CHI system design studies for PEGASUS-III 

    Raman, Roger; Morgan, Kyle; Reusch, Joshua A.; Rogers, John A.; Diem, Stephanie J.; Ebrahimi, Fatima; Jardin, Stephen C.; Nelson, Brian A.; Ono, Masayuki; Weberski, Justin D. (2022-08-03)
    Transient Coaxial Helicity Injection (transient CHI) first developed on the Helicity Injected Torus-II and later on the National Spherical Torus Experiment (NSTX) for implementing solenoid-free plasma current startup ...

  • Highly Sensitive Nonlinear Identification to Track Early Fatigue Signs in Flexible Structures 

    Habtour, Ed M; Di Maio, Dario; Masmeijer, Thijs; Gonzalez, Laura Cordova; Tinga, Tiedo (Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 2022-05)
    This study describes a physics-based and data-driven nonlinear system identification (NSI) approach for detecting early fatigue damage due to vibratory loads. The approach also allows for tracking the evolution of damage ...

  • Damage precursor detection for structures subjected to rotational base vibration 

    Habtour, Ed M; Cole, Daniel P; Stanton, Samuel C; Sridharan, Raman; Dasgupta, Abhijit (International Journal of Non-Linear Mechanics, 2016-03-04)
    This paper presents a nonlinear dynamic methodology for monitoring precursors of fatigue damage in metallic structures under variable rotational base excitation. The methodology accounts for important nonlinearities due ...

  • Quantifying Information without Entropy: Identifying Intermittent Disturbances in Dynamical Systems 

    Montoya, Angela; Habtour, Ed M; Moreu, Fernando (Entropy, 2020-10-23)
    A system’s response to disturbances in an internal or external driving signal can be characterized as performing an implicit computation, where the dynamics of the system are a manifestation of its new state holding some ...

  • Structural state awareness through integration of global dynamic and local material behavior 

    Habtour, Ed M; Cole, Daniel P; Kube, Christopher M; Henry, Todd C; Haynes, Robert A; Gardea, Frank; Sano, Tomoko; Tinga, Tiedo (2019)
    Structural health monitoring and nondestructive inspection techniques typically assess the lifecycle and reliability of high- value aerospace, mechanical, and civil systems. Maintenance and inspection intervals are typically ...

  • Physics-Based-Adaptive Plasma Model for High-Fidelity Numerical Simulations 

    Ho, Andrew; Datta, Iman Anwar Michael; Shumlak, Uri (Frontiers in Physics, 2018-09-21)
    A physics-based-adaptive plasma model and an appropriate computational algorithm are developed to numerically simulate plasma phenomena in high fidelity. The physics-based-adaptive plasma model can be dynamically refined ...