Bedrock Channel Evolution - Revision history

Nick at 19:04, 9 April 2018

2018-04-09T19:04:34Z

Nick at 20:51, 4 April 2018

2018-04-04T20:51:14Z

Nick at 20:50, 4 April 2018

2018-04-04T20:50:57Z

Nick at 20:14, 4 April 2018

2018-04-04T20:14:58Z

Nick at 19:57, 4 April 2018

2018-04-04T19:57:22Z

Nick at 18:27, 4 April 2018

2018-04-04T18:27:56Z

Nick: Created page with "== 3D Bedrock Channel Evolution with Smoothed Particle Hydrodynamics Coupled to a Finite Element Earth == File:NWRichmond AGU VPS 2018.pdf"

2018-04-04T18:26:58Z

Created page with "== 3D Bedrock Channel Evolution with Smoothed Particle Hydrodynamics Coupled to a Finite Element Earth == <pdf>File:NWRichmond AGU VPS 2018.pdf</pdf>"

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== 3D Bedrock Channel Evolution with Smoothed Particle Hydrodynamics Coupled to a Finite Element Earth ==

<pdf>File:NWRichmond AGU VPS 2018.pdf</pdf>

← Older revision		Revision as of 19:04, 9 April 2018
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	An enduring obstacle to reliable modeling of the short and long-term evolution of the stream channel-hillslope ensemble has been the difficulty of estimating stresses generated by stream hydrodynamics. To capture the influence of complex three-dimensional (3D) flows on bedrock channel evolution, we derive the contribution of hydrodynamic stresses to the stress state of the underlying bedrock through a Smoothed Particle Hydrodynamics (SPH) approximation of the Navier-Stokes equations as calculated by the DualSPHysics code (Crespo et al., 2015). Capturing the 3D component of complex flows with SPH provides a more complete description of the stream channel-hillslope ensemble than traditional 1D shear stress derived from hydraulic estimates. Coupling the SPH flow solutions to the stress-strain formulation of the Failure Earth Response Model (FERM) (Koons et al., 2013) provides three-dimensional erosion as a function of the strength-stress ratio of each point in the computational domain. From the coupling of SPH and FERM we gain a 3D physics-based erosion scheme and a two-way link between complex flows and hillslope dynamics in a finite element framework. This novel approach robustly approximates the geomorphic response of bedrock channels with complex geometries and lithologies.		An enduring obstacle to reliable modeling of the short and long-term evolution of the stream channel-hillslope ensemble has been the difficulty of estimating stresses generated by stream hydrodynamics. To capture the influence of complex three-dimensional (3D) flows on bedrock channel evolution, we derive the contribution of hydrodynamic stresses to the stress state of the underlying bedrock through a Smoothed Particle Hydrodynamics (SPH) approximation of the Navier-Stokes equations as calculated by the DualSPHysics code (Crespo et al., 2015). Capturing the 3D component of complex flows with SPH provides a more complete description of the stream channel-hillslope ensemble than traditional 1D shear stress derived from hydraulic estimates. Coupling the SPH flow solutions to the stress-strain formulation of the Failure Earth Response Model (FERM) (Koons et al., 2013) provides three-dimensional erosion as a function of the strength-stress ratio of each point in the computational domain. From the coupling of SPH and FERM we gain a 3D physics-based erosion scheme and a two-way link between complex flows and hillslope dynamics in a finite element framework. This novel approach robustly approximates the geomorphic response of bedrock channels with complex geometries and lithologies.

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 == 3D Bedrock Channel Evolution with Smoothed Particle Hydrodynamics Coupled to a Finite Element Earth ==
 An enduring obstacle to reliable modeling of the short and long-term evolution of the stream channel-hillslope ensemble has been the difficulty of estimating stresses generated by stream hydrodynamics. To capture the influence of complex three-dimensional (3D) flows on bedrock channel evolution, we derive the contribution of hydrodynamic stresses to the stress state of the underlying bedrock through a Smoothed Particle Hydrodynamics (SPH) approximation of the Navier-Stokes equations as calculated by the DualSPHysics code (Crespo et al., 2015). Capturing the 3D component of complex flows with SPH provides a more complete description of the stream channel-hillslope ensemble than traditional 1D shear stress derived from hydraulic estimates. Coupling the SPH flow solutions to the stress-strain formulation of the Failure Earth Response Model (FERM) (Koons et al., 2013) provides three-dimensional erosion as a function of the strength-stress ratio of each point in the computational domain. From the coupling of SPH and FERM we gain a 3D physics-based erosion scheme and a two-way link between complex flows and hillslope dynamics in a finite element framework. This novel approach robustly approximates the geomorphic response of bedrock channels with complex geometries and lithologies.
 <pdf width="1280" height="1050">File:NWRichmond AGU VPS 2018.pdf</pdf>

← Older revision		Revision as of 19:57, 4 April 2018
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	An enduring obstacle to reliable modeling of the short and long-term evolution of the stream channel-hillslope ensemble has been the difficulty of estimating stresses generated by stream hydrodynamics. To capture the influence of complex three-dimensional (3D) flows on bedrock channel evolution, we derive the contribution of hydrodynamic stresses to the stress state of the underlying bedrock through a Smoothed Particle Hydrodynamics (SPH) approximation of the Navier-Stokes equations as calculated by the DualSPHysics code (Crespo et al., 2015). Capturing the 3D component of complex flows with SPH provides a more complete description of the stream channel-hillslope ensemble than traditional 1D shear stress derived from hydraulic estimates. Coupling the SPH flow solutions to the stress-strain formulation of the Failure Earth Response Model (FERM) (Koons et al., 2013) provides three-dimensional erosion as a function of the strength-stress ratio of each point in the computational domain. From the coupling of SPH and FERM we gain a 3D physics-based erosion scheme and a two-way link between complex flows and hillslope dynamics in a finite element framework. This novel approach robustly approximates the geomorphic response of bedrock channels with complex geometries and lithologies.		An enduring obstacle to reliable modeling of the short and long-term evolution of the stream channel-hillslope ensemble has been the difficulty of estimating stresses generated by stream hydrodynamics. To capture the influence of complex three-dimensional (3D) flows on bedrock channel evolution, we derive the contribution of hydrodynamic stresses to the stress state of the underlying bedrock through a Smoothed Particle Hydrodynamics (SPH) approximation of the Navier-Stokes equations as calculated by the DualSPHysics code (Crespo et al., 2015). Capturing the 3D component of complex flows with SPH provides a more complete description of the stream channel-hillslope ensemble than traditional 1D shear stress derived from hydraulic estimates. Coupling the SPH flow solutions to the stress-strain formulation of the Failure Earth Response Model (FERM) (Koons et al., 2013) provides three-dimensional erosion as a function of the strength-stress ratio of each point in the computational domain. From the coupling of SPH and FERM we gain a 3D physics-based erosion scheme and a two-way link between complex flows and hillslope dynamics in a finite element framework. This novel approach robustly approximates the geomorphic response of bedrock channels with complex geometries and lithologies.

−	<pdf>File:NWRichmond AGU VPS 2018.pdf</pdf>	+	<pdf width="1280" height="1050">File:NWRichmond AGU VPS 2018.pdf</pdf>

← Older revision		Revision as of 18:27, 4 April 2018
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	== 3D Bedrock Channel Evolution with Smoothed Particle Hydrodynamics Coupled to a Finite Element Earth ==		== 3D Bedrock Channel Evolution with Smoothed Particle Hydrodynamics Coupled to a Finite Element Earth ==
		+
		+	An enduring obstacle to reliable modeling of the short and long-term evolution of the stream channel-hillslope ensemble has been the difficulty of estimating stresses generated by stream hydrodynamics. To capture the influence of complex three-dimensional (3D) flows on bedrock channel evolution, we derive the contribution of hydrodynamic stresses to the stress state of the underlying bedrock through a Smoothed Particle Hydrodynamics (SPH) approximation of the Navier-Stokes equations as calculated by the DualSPHysics code (Crespo et al., 2015). Capturing the 3D component of complex flows with SPH provides a more complete description of the stream channel-hillslope ensemble than traditional 1D shear stress derived from hydraulic estimates. Coupling the SPH flow solutions to the stress-strain formulation of the Failure Earth Response Model (FERM) (Koons et al., 2013) provides three-dimensional erosion as a function of the strength-stress ratio of each point in the computational domain. From the coupling of SPH and FERM we gain a 3D physics-based erosion scheme and a two-way link between complex flows and hillslope dynamics in a finite element framework. This novel approach robustly approximates the geomorphic response of bedrock channels with complex geometries and lithologies.

	<pdf>File:NWRichmond AGU VPS 2018.pdf</pdf>		<pdf>File:NWRichmond AGU VPS 2018.pdf</pdf>