Zobrazeno 1 - 10
of 10 147
pro vyhledávání: '"Baars A"'
Autor:
Cuéllar, Antonio, Amico, Enrico, Serpieri, Jacopo, Cafiero, Gioacchino, Baars, Woutijn J, Discetti, Stefano, Ianiro, Andrea
We present an experimental setup to perform time-resolved convective heat transfer measurements in a turbulent channel flow with air as the working fluid. We employ a heated thin foil coupled with high-speed infrared thermography. The measurement tec
Externí odkaz:
http://arxiv.org/abs/2410.12778
We introduce a spatiotemporal self-exciting point process $(N_t(x))$, boundedly finite both over time $[0,\infty)$ and space $\mathscr X$, with excitation structure determined by a graphon $W$ on $\mathscr X^2$. This graphon Hawkes process generalize
Externí odkaz:
http://arxiv.org/abs/2409.16903
The long runtime associated with simulating multidisciplinary systems challenges the use of Bayesian optimization for multidisciplinary design optimization (MDO). This is particularly the case if the coupled system is modeled in a partitioned manner
Externí odkaz:
http://arxiv.org/abs/2408.08691
Autor:
Gebre, Binyam, Ranta, Karoliina, Elzen, Stef van den, Kuiper, Ernst, Baars, Thijs, Heskes, Tom
In personalized recommender systems, embeddings are often used to encode customer actions and items, and retrieval is then performed in the embedding space using approximate nearest neighbor search. However, this approach can lead to two challenges:
Externí odkaz:
http://arxiv.org/abs/2402.16073
A Tomographic Background-Oriented Schlieren (TBOS) technique is developed to aid in the visualization of compressible flows. An experimental setup was devised around a sub-scale rocket nozzle, in which four cameras were set up in a circular configura
Externí odkaz:
http://arxiv.org/abs/2311.10332
Autor:
Baars, Woutijn J., Ragni, Daniele
Acoustic spectra of rotor noise yield frequency-distributions of energy within pressure time series. However, they are unable to reveal phase-relations between different frequency components, while the latter play a role in low-frequency intensity mo
Externí odkaz:
http://arxiv.org/abs/2310.01056
This work explores the dynamic response of a turbulent boundary layer to large-scale reactive opposition control, at a friction Reynolds number of $Re_\tau \approx 2\,240$. A hot-film is employed as the input sensor, capturing large-scale fluctuation
Externí odkaz:
http://arxiv.org/abs/2309.13929
Response details are presented of small-scale Helmholtz resonators excited by grazing turbulent boundary layer flow. A particular focus lies on scaling of the resonance, in relation to the spatio-temporal characteristics of the near-wall velocity and
Externí odkaz:
http://arxiv.org/abs/2308.07776
Wall-pressure fluctuations are a practically robust input for real-time control systems aimed at modifying wall-bounded turbulence. The scaling behaviour of the wall-pressure--velocity coupling requires investigation to properly design a controller w
Externí odkaz:
http://arxiv.org/abs/2307.06449
We introduce a variant of the Hawkes-fed birth-death process, in which the conditional intensity does not increase at arrivals, but at departures from the system. Since arrivals cause excitation after a delay equal to their lifetimes, we call this a
Externí odkaz:
http://arxiv.org/abs/2306.12812