Freudenau test case - Revision history

Bendikhansen: /* Gallery */

2020-10-27T13:03:09Z

Gallery

Bendikhansen: /* Gallery */

2020-10-27T13:02:28Z

Gallery

Bendikhansen: /* Gallery */

2020-10-27T12:59:50Z

Gallery

Bendikhansen: /* Gallery */

2020-10-27T12:59:08Z

Gallery

Bendikhansen: /* Gallery */

2020-10-27T12:58:53Z

Gallery

Bendikhansen: /* Gallery */

2020-10-27T12:57:50Z

Gallery

Bendikhansen: /* Gallery */

2020-10-27T12:57:25Z

Gallery

LB at 14:00, 21 October 2020

2020-10-21T14:00:10Z

LB: /* Results */

2020-10-21T13:32:19Z

Results

LB: /* Introduction */

2020-04-29T15:35:57Z

Introduction

@@ Line 89: / Line 89: @@
 =Gallery=
-<gallery>
+<gallery mode=packed>
 Areal-view-HPP-Freudenau_c_Verbund.jpg|Aerial view of Fredenau hydropower plant (source:Verbund).
 Turbinen_cVerbund_web-scaled.jpg|Kaplan turbine at hydropower plant Freudenau (source: Verbund).

@@ Line 89: / Line 89: @@
 =Gallery=
-<gallery mode=packed>
+<gallery>
 Areal-view-HPP-Freudenau_c_Verbund.jpg|Aerial view of Fredenau hydropower plant (source:Verbund).
 Turbinen_cVerbund_web-scaled.jpg|Kaplan turbine at hydropower plant Freudenau (source: Verbund).
@@ Line 98: / Line 98: @@
 fredenau_adding_sediments.jpg|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).
 </gallery>

@@ Line 99: / Line 99: @@
 </gallery>
-[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg|thumb|none|250px|Aerial view of Fredenau hydropower plant (source:Verbund).]]
+[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg|thumb|none|250px|Aerial view of Fredenau hydropower plant (source:Verbund).]][[file:Turbinen_cVerbund_web-scaled.jpg|thumb|none|250px|Kaplan turbine at hydropower plant Freudenau (source: Verbund).]]
 [[file:fredenau_fishway.jpg|thumb|none|250px|Nature-like fishway at Freudenau (source: Verbund).]]
 [[file:Layout-2-Freudenau_Verbund.png|thumb|none|250px|Layout of the hydropower plant Freudenau (source: Verbund).]]

@@ Line 100: / Line 100: @@
 [[file:Areal-view-HPP-Freudenau_c_Verbund.jpg|thumb|none|250px|Aerial view of Fredenau hydropower plant (source:Verbund).]]
-[[file:Turbinen_cVerbund_web-scaled.jpg|thumb|none|250px|Kaplan turbine at hydropower plant Freudenau (source: Verbund).
+[[file:Turbinen_cVerbund_web-scaled.jpg|thumb|none|250px|Kaplan turbine at hydropower plant Freudenau (source: Verbund).]]
-[[file:fredenau_fishway.jpg|thumb|none|250px|Nature-like fishway at Freudenau (source: Verbund).
+[[file:fredenau_fishway.jpg|thumb|none|250px|Nature-like fishway at Freudenau (source: Verbund).]]
-[[file:Layout-2-Freudenau_Verbund.png|thumb|none|250px|Layout of the hydropower plant Freudenau (source: Verbund).
+[[file:Layout-2-Freudenau_Verbund.png|thumb|none|250px|Layout of the hydropower plant Freudenau (source: Verbund).]]
-[[file:Longitudinal-section-of-HPP-Freudenau_c_Verbund.png|thumb|none|250px|Longitudinal section of the hydropower plant Freudenau (source: Verbund).
+[[file:Longitudinal-section-of-HPP-Freudenau_c_Verbund.png|thumb|none|250px|Longitudinal section of the hydropower plant Freudenau (source: Verbund).]]
-[[file:Layout_3_Freudenau_cVerbund_web.jpg|thumb|none|250px|Layout of the nature-like fishway at Freudenau HPP and its different sections (source: Verbund).
+[[file:Layout_3_Freudenau_cVerbund_web.jpg|thumb|none|250px|Layout of the nature-like fishway at Freudenau HPP and its different sections (source: Verbund).]]
-[[file:fredenau_adding_sediments.jpg|thumb|none|250px|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).
+[[file:fredenau_adding_sediments.jpg|thumb|none|250px|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).]]

← Older revision		Revision as of 12:58, 27 October 2020
Line 100:		Line 100:

	[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg\|thumb\|none\|250px\|Aerial view of Fredenau hydropower plant (source:Verbund).]]		[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg\|thumb\|none\|250px\|Aerial view of Fredenau hydropower plant (source:Verbund).]]
		+	[[file:Turbinen_cVerbund_web-scaled.jpg\|thumb\|none\|250px\|Kaplan turbine at hydropower plant Freudenau (source: Verbund).
		+	[[file:fredenau_fishway.jpg\|thumb\|none\|250px\|Nature-like fishway at Freudenau (source: Verbund).
		+	[[file:Layout-2-Freudenau_Verbund.png\|thumb\|none\|250px\|Layout of the hydropower plant Freudenau (source: Verbund).
		+	[[file:Longitudinal-section-of-HPP-Freudenau_c_Verbund.png\|thumb\|none\|250px\|Longitudinal section of the hydropower plant Freudenau (source: Verbund).
		+	[[file:Layout_3_Freudenau_cVerbund_web.jpg\|thumb\|none\|250px\|Layout of the nature-like fishway at Freudenau HPP and its different sections (source: Verbund).
		+	[[file:fredenau_adding_sediments.jpg\|thumb\|none\|250px\|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).

← Older revision		Revision as of 12:57, 27 October 2020
Line 99:		Line 99:
	</gallery>		</gallery>

−	[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg\|none\|250px\|Aerial view of Fredenau hydropower plant (source:Verbund).]]	+	[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg\|thumb\|none\|250px\|Aerial view of Fredenau hydropower plant (source:Verbund).]]

← Older revision		Revision as of 12:57, 27 October 2020
Line 98:		Line 98:
	fredenau_adding_sediments.jpg\|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).		fredenau_adding_sediments.jpg\|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).
	</gallery>		</gallery>
		+
		+	[[file:Areal-view-HPP-Freudenau_c_Verbund.jpg\|none\|250px\|Aerial view of Fredenau hydropower plant (source:Verbund).]]

@@ Line 54: / Line 54: @@
 =Results=
-[[File:Freudenau Fig. 1 Contour map of study area rights BOKU, image source, Google Earth.png|thumb|right|Fig. 1 Contour map of study area downstream of the HPP Freudenau (Picture rights: BOKU, image source: Google Earth)]]
 '''Feasibility study'''
@@ Line 75: / Line 73: @@
 '''Numerical model'''
-In order to analyses potential cues for orientation, a numerical model of the fish pass entrance and downstream area of the HPP has been set up using FLOW3D. The applied numerical model solves the hydrodynamic, temperature and chemical spatial distribution for two scenarios that reflect the conditions of the field measurement campaign.
+In order to analyses potential cues for orientation, a numerical model of the fish pass entrance and downstream area of the HPP has been set up using FLOW3D. The applied numerical model solves the hydrodynamic (Fig.2), temperature (Fig. 3) and chemical spatial (Fig. 4) distribution for two scenarios that reflect the conditions of the field measurement campaign.
-As result the spatial pressure, velocity, temperature and tracer fields are available. The numerical result were be combined with the fish swimming path obtained from the telemetry study. Since the telemetry study was carried out during relative low flow conditions the discharge through the HPP varies between 1050 and 1400 m³/s. Additionally one has to point out that for these discharges the distribution of the discharge within the HPP varies and influences the tailwater characteristic visibly (see Fig. 2).
+The temperature field within the numerical model is only influenced by the water temperature of the fish pass. Even the fish pass is fed with Danube water the interaction with the groundwater is much higher und therefore influences the water temperature in there. Records of BOKU, which were taken together with the telemetry study, show a temperature difference between Danube and fish pass of about +- 0.6 °C, varying over the day. During night the fish pass was colder compared to the Danube, while the ratio changed during the day. These dynamics in temperature is not considered by the numerical simulation. But, the numerical results show how far the temperature influence extends.
 =Gallery=
@@ Line 91: / Line 98: @@
 fredenau_adding_sediments.jpg|Sediment is being added downstream of the hydropower plant Freudenau (source: Verbund).
 </gallery>

@@ Line 4: / Line 4: @@
 =Introduction=
-The Danube River is the second largest river in Europe with a total length of 2,850 km and a total catchment area of 817,000 km². The project area is located on the upper reach of the Danube River (distance from the mouth: 1,921 km, catchment area: 100,700 km²) within the city of Vienna/Republic of Austria. The inter-annual discharge varies between 900 to 5000 m3/s.
+The Danube River is the second largest river in Europe with a total length of 2,850 km and a total catchment area of 817,000 km². The project area is located on the upper reach of the Danube River (distance from the mouth: 1,921 km, catchment area: 100,700 km²) within the city of Vienna/Republic of Austria. The inter-annual discharge varies between 900 to 5000 m³/s.
 The Danube water body upstream of the Test Case is classified as having a moderate to worse ecological potential, while the waterbody downstream is classified as a natural water body with good ecological status.