Physically Based Simulation at ETHZ - ETH Zurich | Flashcards & Summaries

Suggested languages for you:

# Lernmaterialien für Physically Based Simulation an der ETHZ - ETH Zurich

Greife auf kostenlose Karteikarten, Zusammenfassungen, Übungsaufgaben und Altklausuren für deinen Physically Based Simulation Kurs an der ETHZ - ETH Zurich zu.

TESTE DEIN WISSEN

OBBs are more suitable than AABBs for performing broad-phase collision detection

Lösung anzeigen
TESTE DEIN WISSEN

False

Lösung ausblenden
TESTE DEIN WISSEN

Are Quaternions order dependant operations?

Lösung anzeigen
TESTE DEIN WISSEN

Yes

Lösung ausblenden
TESTE DEIN WISSEN

For small time steps the error is dominated by ...

Lösung anzeigen
TESTE DEIN WISSEN

discretization error

Lösung ausblenden
TESTE DEIN WISSEN

A grid based solver makes pressure solving

Lösung anzeigen
TESTE DEIN WISSEN

easier

Lösung ausblenden
TESTE DEIN WISSEN

The center of mass is invariant to rotations

Lösung anzeigen
TESTE DEIN WISSEN

True

Lösung ausblenden
TESTE DEIN WISSEN

For large time steps the error is dominated by ...

Lösung anzeigen
TESTE DEIN WISSEN

discretization error

Lösung ausblenden
TESTE DEIN WISSEN

How does fluid simulation work on a high level? What are the 3 main operations?

Lösung anzeigen
TESTE DEIN WISSEN

Think of a fluid as a collection of boxes or cells. Each box has various properties, like velocity and density. These boxes interact with their neighbors, affecting their velocity and density.

For one simulation there are 3 main operations.

• diffuse: the velocities of the fluids need to spread out
• project: since our fluid is incompressible this means that the amount of fluid in each box has to stay constant. So the amount of fluid going in has to be exactly equal to the amount of fluid going out. So this operation runs through all the cells and fixes them so everything is in equilibrium
• advect: advection means that we apply the velocities to things in the fluid and we also change the velocities based on the velocities before
Lösung ausblenden
TESTE DEIN WISSEN

Smaller time steps ...

Lösung anzeigen
TESTE DEIN WISSEN

always improve stability

Lösung ausblenden
TESTE DEIN WISSEN

At static equilibrium...

Lösung anzeigen
TESTE DEIN WISSEN

the system is in a state of minimum potential energy and the total forces are gone for all nodes

Lösung ausblenden
TESTE DEIN WISSEN

Large time steps typically ...

Lösung anzeigen
TESTE DEIN WISSEN

speed up the simulation

Lösung ausblenden
TESTE DEIN WISSEN

Inertial tensor is invariant to object orientation?

Lösung anzeigen
TESTE DEIN WISSEN

True

Lösung ausblenden
TESTE DEIN WISSEN

What methods of collision responses are there?

Lösung anzeigen
TESTE DEIN WISSEN
• Penalty-Based Collisions
• Impulse-Based Collisions
Lösung ausblenden
• 96766 Karteikarten
• 1723 Studierende
• 87 Lernmaterialien

## Beispielhafte Karteikarten für deinen Physically Based Simulation Kurs an der ETHZ - ETH Zurich - von Kommilitonen auf StudySmarter erstellt!

Q:

OBBs are more suitable than AABBs for performing broad-phase collision detection

A:

False

Q:

Are Quaternions order dependant operations?

A:

Yes

Q:

For small time steps the error is dominated by ...

A:

discretization error

Q:

A grid based solver makes pressure solving

A:

easier

Q:

The center of mass is invariant to rotations

A:

True

Q:

For large time steps the error is dominated by ...

A:

discretization error

Q:

How does fluid simulation work on a high level? What are the 3 main operations?

A:

Think of a fluid as a collection of boxes or cells. Each box has various properties, like velocity and density. These boxes interact with their neighbors, affecting their velocity and density.

For one simulation there are 3 main operations.

• diffuse: the velocities of the fluids need to spread out
• project: since our fluid is incompressible this means that the amount of fluid in each box has to stay constant. So the amount of fluid going in has to be exactly equal to the amount of fluid going out. So this operation runs through all the cells and fixes them so everything is in equilibrium
• advect: advection means that we apply the velocities to things in the fluid and we also change the velocities based on the velocities before
Q:

Smaller time steps ...

A:

always improve stability

Q:

At static equilibrium...

A:

the system is in a state of minimum potential energy and the total forces are gone for all nodes

Q:

Large time steps typically ...

A:

speed up the simulation

Q:

Inertial tensor is invariant to object orientation?

A:

True

Q:

What methods of collision responses are there?

A:
• Penalty-Based Collisions
• Impulse-Based Collisions

### Erstelle und finde Lernmaterialien auf StudySmarter.

Greife kostenlos auf tausende geteilte Karteikarten, Zusammenfassungen, Altklausuren und mehr zu.

## Das sind die beliebtesten StudySmarter Kurse für deinen Studiengang Physically Based Simulation an der ETHZ - ETH Zurich

Für deinen Studiengang Physically Based Simulation an der ETHZ - ETH Zurich gibt es bereits viele Kurse, die von deinen Kommilitonen auf StudySmarter erstellt wurden. Karteikarten, Zusammenfassungen, Altklausuren, Übungsaufgaben und mehr warten auf dich!

## Das sind die beliebtesten Physically Based Simulation Kurse im gesamten StudySmarter Universum

##### Physical examination

Cyberjaya University College of Medical Science

##### physical education(midterm)

West Visayas State University

##### Numerische Simulation

Universität Stuttgart