Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Streaming instability"”.
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Streaming Instabilities in Class 0/I Disks
… One promising solution to this problem is the streaming instability. Streaming instability is only triggered with a large enough dust-to-gas ratio and grain size. Though it is unknown when and where those conditions are met in protoplanetary disks, recent studies have indicated that planetary …
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Planet formation and evolution in protoplanetary disc
… can potentially be solved by the action of the streaming instability that causes the rapid formation of dust clumps that can later collapse under the action of self-gravity. In this thesis, we investigate the emission of systems undergoing streaming instability that we simulate through 2D local …
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Modeling Exomoon Formation in Circumplanetary Disks Using Dustpy
… bumps and dust traps capable of triggering the streaming instability. Multiple simulations were conducted with injected dust particles having maximum sizes of 100 µm, 1 mm, and 1 cm, and with fragmentation velocities set to 100, 500, and 1000 cm/s. Results show that regardless of the initial …
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Numerical Simulation of Ion Waves in Dusty Plasmas
… using our numerical model. Also, an ion acoustic streaming instability in unmagnetized dusty plasmas due to dust charging is investigated. The numerical simulation results show good agreement with theoretical predictions and provide further insight into dust charging effects on wave modes and …
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Connecting models and observations of disc evolution and planet formation
… to kickstart the formation of planetesimal under streaming instability are met in one of the rings.
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Modeling of Plasma Irregularities Associated with Artificially Created Dusty Plasmas in the Near-Earth Space Environment
… plasmas. First of all, the ion acoustic (IA) instability and dust acoustic (DA) instability in homogenous unmagnetized plasmas are investigated by a computational model using a Boltzmann electron assumption. Such acoustic-type instabilities are attributed to the charged dust and ion streaming …
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Planet formation, resonant drag instabilities, and vortices
… sturdy grains, pressure bumps, the gravitational instability, the Safronov-Goldreich-Ward mechanism, the streaming instability (SI), and turbulent concentration. I argue that the most convincing option is the SI. In the second part of the thesis, I explain how the SI works. In fact, the mechanism …