How it works

The graphical user interface ROHR2WIN is the pre- and postprocessor of ROHR2. All inputs can be made using ROHR2WIN. A wide range of control functions enables the user to check the input data easily. All results can be displayed and checked, reports are generated.

System and Load case input

ROHR2WIN creates input data for the calculation kernel.

• All data required for the analysis are put in by the user by mouse or dialog windows.
• ROHR2WIN offers the full interactive access to data via graphic.
• All inputs are shown graphically
• All control records, the line topology and superpositions of load cases are created automatically by the program

Databases

• The ROHR2 user is supported by extensive, integrated databases

Documentation and Results

Analysis results are shown tabulated and graphically.
All result details are within easy reach by a mouse click.

Load case results
Graphical presentation of displacements and detailed results at selected nodes.

• Graphical representation of displacements, rotations, forces, moments and equivalent stresses for calculated load case and load cases created by superposition
• spatial presentation only for x, y or z direction
• zoom, pan and rotate-function available
• graphical representation of results is scalable
• detailed results for a selected node by mouse-click
• results in global or local coordinate system
• results can be printed out or saved in rtf- , html or txt format (e.g. MS Office)
• tabulated overviews can be modified by user using filter function
• sort results by a click on the table header
• Interaction between table and graphic, selected node in graphic is highlighted in table and vice versa

Stress Analysis

Colored presentation of stress utilization and detailed results at selected nodes

• graphical representation of stresses for the selected equation,
  equations are defined automatically depending from the defined load cases
• stress analysis according to different specifications for parts of the calculation system
• stress analysis limited only to selected parts of a calculation system
• detailed results for a selected node by mouseclick
• results can be printed out or saved in rtf- , html or txt format (e.g. MS Office)
• tabulated overview can be modified by user using filter function
• sort results by click e. g. acc. to utilization or node number
• interaction between table and graphic, selected node in graphic is highlighted in table and vice versa

Loads on Nozzles and Supports

Graphical presentation of loads on nozzles and / or supports and detailed results at selected supports

• Define allowable loads at nozzles
• Consider vessel spring in pipe stress calculation
• Nozzle with support conditions, spring rates, allowable loads and specific coordinate system
• graphical representation of loads for the selected load case
• graphical presentation for all or for selected supports
• detailed results for a selected node by mouse-click
• documentation in global, local or user defined coordinate system
• results can be printed out or saved in rtf- or txt format (MS Office)
• tabulated overview can be modified by user using filter function
• sort results by click e. g. acc. to load in any direction or movement in any direction
• interaction between table and graphic, selected node in graphic is highlighted in table and vice versa

Additional Results

Besides the analysis of stresses and loads at support and connections, ROHR2 gives out, among others, the results of:

• Expansion joint analysis
• Internal pressure design
• Spring design

Expansion Joints

• Database with lateral, angular and axial exp. joints
• data input by data base or user defined
• spring rates are calculated automatically using the manufacturers data
• forces due to internal pressure are considered automatically
• check of allowable movements for all load cases data sheet with detailed results for any exp. joint

Internal pressure analysis (only for DIN/EN materials)

• Pipes
• Bends
• Tees with or without reinforcing pad

 Spring design

Database with spring supports according to manufacturer’s data

• spring design, estimation
• check of allowable movements
• for all load cases and
• for load case superpositions
• data sheet with result overview for
• all spring and constant supports

Databases

Databases with data e. g. of pipes, bends, flanges or expansion joints according to technical standards or according to manufacturer’s data. Databases are extendable by the user himself.
The delivery includes:

• Pipes: ANSI B36.10, EN 10220, DIN 2448, DIN 2458,
• Bends: EN 10253-2 , ANSI B16.9, DIN 2605 part 1, DIN 2605 part 2
• Flanges: EN 1092-1,  ANSI B16.5, DIN 2627 – DIN 2638
• Blind flanges: EN 1092-1
• Reducers: EN 10253-2, DIN 2616 part 1, DIN 2616 part 2
• Tees: EN 10253-2, DIN 2615 part 1, DIN 2615 part 2
• Expansion joints: HYDRA (Witzenmann), BOA (IWK)
• Heads: EN 10253-2, DIN 28011, DIN 28013, DIN 2617
• Visco dampers: GERB series VES, RHY
• Spring hangers supports: HYDRA (Witzenmann), LISEGA, PSS (Grinnell), PipeSupportsGroup,  HESTERBERG, SSG

Determination of loads:

• Wind according to DIN 1055 part 4, DIN 4133, EN1991, NV65, UBC, IS875  or by user defined wind pressure tables
• Snow and ice loads: DIN 1055

Stiffness of supports according to VDI 3842/2004

Databases for rigid supports, couplings (jacket pipes) and instruments can be created by the user himself.

Such a ‘specialist’ is SINETZ, the program for the calculation of pressure drop and heat loss in branched and intermeshed piping networks with circular, rectangular as well as any cross sections, defined by the hydraulic diameter. Many well-known companies from different industrial branches trust in the quality of SINETZ, among them leading plant construction companies, power station enterprises, and local energy supply companies, shipbuilding companies, ventilating system manufacturers (HVAC), chemical industry, component manufacturers and universities.

Program Overview

The capabilities of SINETZ are:

• Dimensioning of cross sections and insulation in the project period
• Dimensioning of pumps
• Verification of dimensions for network expansions
• Usability analysis of existing piping networks
• Simulation of different operation states or abnormal occurrences in intermeshed piping networks

SINETZ calculates direction of flow, rate of flow and temperature loss for individual pipe sections as well as the temperature and pressure of individual nodes, and the resulting flow distribution for an intermeshed system of any complexity.

Calculations for compressible and incompressible media are both possible. SINETZ solves the tasks by calculation of pressure and temperature loss in branched and intermeshed piping networks with circular, rectangular as well as any cross sections, defined by the hydraulic diameter.

SINETZ geometry and results

System geometry
The system has to be divided into pipe sections. A pipe section consists of a pipe segment with a constant diameter without branches. The calculation parameters are entered by means of a graphical interface. The system geometry is drawn by the mouse, additional values like segments lengths, node height, components and boundary conditions are added by dialog windows and mouse input.

Results output
Various operating states of the system may be simulated by load case input.
Pressure and temperature curves are shown graphically

Output files may be exported into rtf and pdf format including user-defined headers and footers

• Documentation of the results: the calculation output is shown graphically and in tables. Detailed results are shown by double-clicks on the node or segment.
• The program user is supported by integrated expandable databases.
• The program determines the resistance coefficients for some components basing on the geometry and flow state.
• The inputs are shown graphically including different symbols for instruments.

System Requirements

System requirements of single user licenses and PC-workstations in the network:

• PC with min. 1 GB RAM
• Windows 7, Windows VISTA or Windows XP
• Screen resolution minimum 1024 x 768 pixels
• Internet connection for program updates

System requirements of the network server

• Installation of the HASP license manager on a Server PC accessible by all users in the network, running under Windows XP, Windows Server 2003/2008.

Program Versions
SINETZ is available as a single user license and also as network license.

• The single user license allows installing the program on a PC-system of the licensee.
• The network license enables the access to the program system by any PC in the network, limited by the number of users. This depends on the acquirement of a network license for one or more users.

In case of questions during installation and utilization of ROHR2 and SINETZ we support you in several ways:

• A comprehensive Program documentation (manuals for each program module)
• The  ROHR2 FAQ and SINETZ FAQ (Frequently Asked Questions) providing  general questions and answers regarding installation and application of the software
• Contact the Support Team by telephone or e-mail

ROHR2

The program support is available for program licenses under valid maintenance contract. The program system ROHR2 and the additional programs come with detailed application documentation. For any questions about ROHR2 you may contact the ROHR2 hotline to get direct supports from our hotline staff which is composed of ROHR2 developers and engineers using ROHR2 every day. You can send the project file you are currently working on; to discuss your questions with our development and engineering team with has over 30 years of pipe stress analysis experience. This direct link the hotline guarantees an effective use ROHR2 and assures that you are not left alone with your problems.

The update of the software by regular updates is a further essential component of the maintenance agreement. The software is developed continuously in order to incorporate the ongoing changes in the stress calculation codes and norms but also to improve the user interface and extend the capabilities of ROHR2 according to the user’s needs. The material and component databases are regularly extended and adapted to include upcoming changes in specifications. The technical regulations for the calculation of pipes are subject to a permanent change. These changes are pursued and converted in the program system ROHR2 by the development department.

This makes use of the software possible for the user due to the current stand of technology which is demanded by the legislator in the current norms and laws. The programming technical development, the customization to technical prerequisites such as operating systems are also component of the update service. Through this a long-term safeguarding of the investment submits to software and hardware. The maintenance agreement does the remedying of faults and other defects which appear during the use of the programs described above until after the guarantee time period in the end, too.

SINETZ

The SINETZ maintenance agreement includes the user support and software development. A detailed documentation describes the functions of SINETZ and additional programs. Beyond the program documentation the user is supported by competent personal of the SINETZ hotline. In many cases project-related various solution trials can be shown. The direct and fast contact to the SINETZ hotline by telephone and e-mail ensures to put the users interest on the processing of his project in the foreground. Effective use is guaranteed by SINETZ with that.

The SINETZ system contract includes a qualified user support during a period of six month after purchase. In order to boost the efficiency of the SINETZ users, SIGMA proposes a concept of user training, which has proven their effectiveness for many years.

SIGMA Ingenieurgesellschaft mbH

As a specialist in the field of pipe stress analysis and plant construction SIGMA Ingenieurgesellschaft offers a wide range of engineering services as well as software development, system integration, sales and maintenance services. SIGMA Ingenieurgesellschaft mbH was founded 1989 in Dortmund. In November 2005 the company moved to the new office in Unna. The combination of modern working methods, CAE-Software and the Know-how of nearly 40 years of pipe and plant business guarantees a reliable engineering and project consulting in

• Static and dynamic analysis of various projects as power plants, district heat networks, chemical plants, pump stations, refineries, ships, bridges, cranes, and other units in plant construction
• Calculation of Flow Distribution, Pressure Drop and Temperature Drop in Piping Networks,
• Finite -Element Analysis

A group of qualified software engineers are developing:

• The program system ROHR2 Static and Dynamic
• The  programs SINETZ, SINETZfluid
• CAD/CAE-Interfaces
• Additional software according to the customers’ needs

The programs are of the software equipment of national and international engineering companies, the energy-, chemical- and petrochemical industry as well as universities.