Visual Analysis and Exploration of Fluid Flow in a Cooling Jacket |
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We present a visual analysis and exploration of fluid flow through a cooling jacket. Engineers invest a large amount of time and serious effort to optimize the flow through this engine component because of its important role in transferring heat away from the engine block. In this study we examine the design goals engineers apply in order to construct, as closely as possible, the ideal cooling jacket geometry and apply a broad range of visualization tools in order to analyze, explore, and present the results. We systematically employ direct, geometric, texture-based flow visualization techniques as well as automatic feature extraction and interactive feature-based methodology and discuss the relative advantages and disadvantages of these approaches as well as the challenges, both technical and perceptual involved with this application. The result is a feature rich state-of-the-art flow visualization analysis applied to an important and complex data set from real-world computational fluid dynamics simulations.
Click here for the 512x512 resolution of the same video (~30MB)
The AVI videos are viewable with MPlayer on Linux.
The three main components of the cooling jacket: (top) the cylinder head, (bottom) the cylinder block and (middle) the gasket.
Image Space Advection (ISA) applied highlighting
recirculation zones at the boundary surface.
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for a 375 frame, 512x512 resolution MPEG animation of an LIC-like animation of the
result (~8 MB).
Click here
for a 375 frame, 512x512 resolution MPEG animation of an Spot Noise-like animation of
the result (~9 MB).
Dye being used to highlight features like a separatrix
and recirculation zones at the cylinder block surface.
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for a 150 frame, 512x512 resolution MPEG animation of an LIC-like close-up
animation of flow at the cylinder head (~5 MB).
Click here
for the Spot Noise version of the same (~4 MB).
Image Space Advection (ISA) applied highlighting
recirculation zones at the boundary surface.
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for a 250 frame, 512x512 resolution MPEG animation of streamlines
seeded with a rake higlighting a large pressure gradient as
flow passes through the gasket (~11 MB).
Particles being used to visualize global flow behavior.
See videos above for animations.
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for a 1,944 frame, 512x512 resolution MPEG animation
of particles flowing through the geometry (~13 MB).
Streamsurfaces show the chatotic behavior of flow
as a result of flowing to the cylinder head.
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for a 750 frame, 512x512 resolution MPEG animation
of the streamsurfaces (~5 MB).
A velocity magnitude color-mapped streamsurface.
as a result of flowing to the cylinder head.
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for a 750 frame, 512x512 resolution MPEG animation
of the color mapped streamsurface (~5 MB).
Cutting plane topology used to visualize vortex cores
in the longitudinal direction and recirculation on the planes.
[MPEG animation, 750 frames, 512x512 resolution]
cutting plane topology (~5 MB).
Only the vortex cores resulting from cutting plane topology.
The result of Sujudi-Haimes vortex core extraction.
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for a 375 frame, 512x512 resolution MPEG animation
of the vortex core line visualization resulting from
the Sujudi-Haimes extraction method (~3 MB).
Regions of low velocity magnitude extracted interactively.
Regions of low velocity and high temperature extracted interactively. The results speaks well on behalf of the cooling jacket design.
Regions of reverse-longitudinal flow extracted interactively.
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for a 282 frame, 512x512 resolution MPEG animation
of the visualization resulting from
extracting reverse-longitudinal flow (~2 MB).
The scatter plot used to brush regions of reverse-transversal flow.
Regions of reverse-longitudinal and reverse-transversal flow extracted interactively.
Regions of reverse high pressure gradients extracted interactively.
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for a 525 frame, 512x512 resolution MPEG animation
of the visualization resulting from
extracting high pressure gradient regions (~4 MB).