Page 351 - 360.revista de Alta Velocidad - Nº 5

Influence of Aerodynamics in Tunnels Design

The detail of the plate on which the gauges are located can be seen in the following diagram.
It is possible also to see the position of the pressure sensor on one side of the plate in the next
photo:

Figure 11. Pressure sensor location

For the installation of the sensors it has been necessary the use of a vehicle in the tunnel of
The Cabrera and the existence of energy that feed the equipment to which the instrumentation
has been connected.
For the installation of the sensors it has been necessary the use of a vehicle in the The Cabrera
tunnel and to provide electricity to feed the equipment to which the instrumentation has been
connected.

The instrumentation and start-up of the sensors was performed during the night and the
measurements were carried out during the day. Three nights were used for the placement of
the instrumentation and two nights to uninstall equipment.
The data of the circulations of these days: schedules, train typology, length, speed ..., were
provided by RENFE to be able to compare with the arranged instrumentation.
Once the measurements were made in July 2013, work began on the processing of the same,
which materialized in a series of Excel files for each of the circulations analyzed.
Then, a comparative work was started between the field data and the data obtained through
the tool finalizing the innovation project with the generation of the PROTAV tool.

7. Protav

PROTAV (PRopagación de Onda en Túnel de Alta Velocidad,) tool has been developed in
collaboration with the Institute of Microgravity "Ignacio da Riva", hereinafter IDR of the
Universidad Politécnica de Madrid.
PROTAV has been developed as a tool that reflects more or less faithfully the behavior of
pressure waves in tunnels, as well as the introduction of dissipating elements of overpressures.
The main features of the PROTAV tool are as follows:
• It is an INECO´s proprietary software developed in-house. It allows the analysis and
engineering calculations that were not approached with confidence. (Functionality of the
sonic boom).

International Congress on High-speed Rail: Technologies and Long Term Impacts - Ciudad Real (Spain) - 25th anniversary Madrid-Sevilla corridor 349