Databank

Workreport 1997-2

Back

Name:

Fracture Flow and Transport Experiments in Laboratory Scale: Testing Experimental and Modelling Techniques Using a Small Block

Writer:

Pirkko Holtta; Martti Hakanen; Aimo Hautojarvi; Antti Poteri

Language:

English

Page count:

47

Summary:

Working report: FRACTURE FLOW AND TRANSPORT EXPERIMENTS IN LABORATORY SCALE:
TESTING EXPERIMENTAL AND MODELLING TECHNIQUES USING A SMALL BLOCK
Pirkko Hölttä, Martti Hakanen, Aimo Hautojärvi, Antti Poteri


This report has been prepared as a joint effort with Pirkko Hölttä and Martti Hakanen from the Laboratory
of Radiochemistry at University of Helsinki. They have been responsible for the design and operation of the
experimental work. VTT Energy has been responsible for the modelling and scoping calculations. Sections
1 and 2 of this report have been written by Pirkko Hölttä and Martti Hakanen. The joint report has been
compiled at VTT Energy.

The report summarises experimental tests and modelling efforts of flow and transport in a natural fracture at
laboratory scale. Experimental set-up has been developed and tested using a small block (23.4 x 34.6 x 14
cm) having a horizontally planar natural fracture. Block experiments aim to demonstrate visually the
fracture flow, determine the hydraulic characteristics and the flow conditions of a planar natural fracture as
well as the transport behavior of non-sorbing and sorbing radionuclides. This report focuses on modeling
approach. Stochastic model of transport in a single fracture as well as deterministic calculation of transport
in discrete channels are presented and discussed. Experimental design is described and preliminary
hydraulic results with the small block are given. Break-through curves for the non-sorbing tracers are
predicted on the basis of the experimental hydraulic data.
FRACTURE FLOW AND TRANSPORT EXPERIMENTS IN LABORATORY SCALE:
TESTING EXPERIMENTAL AND MODELLING TECHNIQUES USING A SMALL BLOCK
Pirkko Hölttä, Martti Hakanen, Aimo Hautojärvi, Antti Poteri


This report has been prepared as a joint effort with Pirkko Hölttä and Martti Hakanen from the Laboratory
of Radiochemistry at University of Helsinki. They have been responsible for the design and operation of the
experimental work. VTT Energy has been responsible for the modelling and scoping calculations. Sections
1 and 2 of this report have been written by Pirkko Hölttä and Martti Hakanen. The joint report has been
compiled at VTT Energy.

The report summarises experimental tests and modelling efforts of flow and transport in a natural fracture at
laboratory scale. Experimental set-up has been developed and tested using a small block (23.4 x 34.6 x 14
cm) having a horizontally planar natural fracture. Block experiments aim to demonstrate visually the
fracture flow, determine the hydraulic characteristics and the flow conditions of a planar natural fracture as
well as the transport behavior of non-sorbing and sorbing radionuclides. This report focuses on modeling
approach. Stochastic model of transport in a single fracture as well as deterministic calculation of transport
in discrete channels are presented and discussed. Experimental design is described and preliminary
hydraulic results with the small block are given. Break-through curves for the non-sorbing tracers are
predicted on the basis of the experimental hydraulic data.

Keywords:

File(s):

Fracture Flow and Transport Experiments in Laboratory Scale: Testing Experimental and Modelling Techniques Using a Small Block (pdf) (1.1 MB)


Back


Share article:
This website stores cookies on your computer. These cookies are used to improve our website and provide more personalised services to you.
Close

Cookies

To make this site work properly, we sometimes place small data files called cookies on your device. Most big websites do this too.

1. What are cookies?

A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size and other display preferences) over a period of time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another.

2. How do we use cookies?

A number of our pages use cookies to remember your actions and preferences (such as login, language, font size and other display preferences.)

Also, some videos embedded in our pages use a cookie to anonymously gather statistics on how you got there and what videos you visited.

Enabling these cookies is not strictly necessary for the website to work but it will provide you with a better browsing experience. You can delete or block these cookies, but if you do that some features of this site may not work as intended.

The cookie-related information is not used to identify you personally and the pattern data is fully under our control. These cookies are not used for any purpose other than those described here.

3. How to control cookies

You can control and/or delete cookies as you wish – for details, see aboutcookies.org. You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.

Close